A camcorder is a video camera with a built-in video recorder. It
stores images and sound using videotape or optical disc media or hard disk drive.
A tape-based camcorder
operates the same way as your home VCR. It will record, play
back, fast forward and rewind. The
camcorder captures the video through the lens and records it
to the camcorder's media. It
records the audio through a microphone. After light passes through
an optical lens, it is focused onto a chip that has tiny dots called
pixels (picture elements). The chip converts these pixels into
electrical signals that are recorded.
Some of the features you should consider before buying a camcorder
include:
Size, look and feel
Controls - buttons, knobs and switches
Optical system - Lens and CCD
Resolution
Format
Media
Focus
Exposure
Image Stabilization
Viewfinder & LCD screen
Microphone
Zoom
Connectivity
Batteries
Still image capability
Accessories
The size, look and feel:
Sleek and compact, digital camcorders are smaller than the
camcorders of old. New models are so compact that many fit in
one hand. They are truly "take anywhere" camcorders
and marvels of miniaturization.
Camcorders have
gotten progressively more compact, and today's models are the
smallest yet. In general, VHS camcorders are the largest and
heaviest, with the S-VHS a bit smaller. The VHS-C is much more
compact, but generally not as lightweight as the 8mm or Hi-8
camcorders. Digital models (MiniDV & DVD) are the smallest ones on the market; in
fact some of them are even small enough to fit in a pocket.
You should feel comfortable with the size of the camera. It
should feel right in your hands. Look over the camcorder and
see if the controls are positioned where you would like to
operate them.
Controls:
One important buying consideration is how well the camcorder
balances size and usability. The controls
on some smaller camcorders
can be difficult to use because the controls
don't naturally sit where your fingers fall; you sometimes
have to shift the camera to reach them, or use both hands. In
particular, on many smaller camcorders the zoom control can be awkwardly placed.
Optical system:
The camcorder's lens is one of the most important
components to consider.
Lens: Probably the most important
part of the camcorder.
Lens size:
The larger the lens on a DV camcorder, the more light it lets in, providing better color information to the CCDs and resulting in better performance in low light.
This especially helps when choosing a camera with only 1 CCD.
CCD Chip: Having
passed through the lens, light then hits the charge
coupled device (CCD), which is at the heart of the camera
and responsible for translating the light into
electronic signals.
Often
referred to as the image chip, the CCD is made up of
thousands of little cells or pixels. These are
arranged in a grid and each pixel produces its own
electrical signal when touched by light. Generally
speaking, the larger the chip, the more pixels and so
the better quality the image. However, recent
developments have seen the 1/3 inch and 1/4 inch CCDs which
continue to offer impressive levels of detail on
smaller chips.
CCD
size: As a general rule, the more pixels the camcorder CCD
(the chip that captures the video) has, the better the image
quality of the resulting video will be.
3 CCD vs. 1 CCD
Charged-coupled devices (CCDs) are chips in a DV camcorder used to capture images from the lens. One-CCD camcorders capture images by interpreting RGB colors with one chip. Three-CCD cameras capture image data by assigning one color to each chip, resulting in more accurate color information. Over 90% of the consumer-level DV cameras are of the 1CCD variety. In general they are less expensive than 3CCD DV
cams. Panasonic offers several 3CCD camcorder models under $1,000.
Resolution:
The difference with
digital is in the megapixel, up to 500-line resolution which
is presented via a CCD (charge-coupled device) imaging screen.
The CCD is measured in pixels. And the more pixels, the
better. Digital camcorders offer 680,000 pixels to a megapixel (one million pixels) for amazingly sharp, crisp
digital video. With digital, making copies from one camcorder
to another is easy and there's virtually no loss in quality.
Basically,
the higher the resolution, the sharper the picture. Resolution
ranges from 250 lines for standard VHS quality to over 500 lines
for digital quality.
Format:
There are many camcorder formats: MiniDV,
Hi8mm, Digital8, Mini-DVD, VHS, S-VHS, VHS-C. Many camcorders use the MiniDV videotape
format. A Digital8 camcorder
records digital video onto Hi-8mm videotapes and can also play
back analog videotapes recorded on Hi-8 camcorders. Many digital
camcorders can record from a composite or S-Video source, as
well, so you can transfer video from an older analog camcorder
onto digital tape.
When camcorders were introduced, they all used VHS tapes,
but now there are smaller formats. VHS-C camcorders use a normal VHS tape in a
smaller cassette. You can easily play back VHS-C on a home VCR
using a VHS-C-to-VHS adaptor included with most VHS-C
models. Simply place your VHS-C tape in the adaptor and slide it
into your VCR just like a standard tape.
Because 8mm tape is smaller than VHS tape, 8mm camcorders are
more compact than VHS camcorders. You cannot play back 8mm tape
in a normal VCR but you can play it back on your TV by hooking
up your camcorder to the TV.
- MiniDV is the most
common digital format, smaller than a Digital8 camcorder,
and the tape is very compact (about 1/12th of the size of
the VHS tape). Its recording capability is two hours at
500 lines of resolution.
- Digital8 format is
a good choice if you want to upgrade to digital from an
8mm or a Hi8 camcorder. Features are pretty close to a MiniDV camcorder, with one key advantage: Digital8
can play back your old 8mm and Hi8 videos.
- Mini-DVD is a 8cm
optical disc which will play on many DVD Video players. Random access to
scenes and no rewind or tape to jam are just a few of the
benefits of disc.
See more on Camcorder Formats
Media:
Digital
camcorders still use videotape (most use a format called
MiniDV), but some can also store video on memory cards, while
others use DVD disc.
Camcorders that store video exclusively on memory cards are
now available. Panasonic launched the
SV-AV10, which can record up to 30 minutes of video to a
Secure Digital memory card. However, this camera records video
at a much lower resolution than a MiniDV camcorder does and
highly compresses it, so memory cards won't start supplanting
videotapes as the most convenient way to record video anytime
soon. Most MiniDV tapes hold 60 minutes, extended to 90 minutes with LP recording
speed.
Some Sony MiniDV cassettes (DVM60EXML) have a tiny, built-in memory chip
that can record information. Media cost is not excessive for
any format. $3 to $9 is the average cost per tape or disc. Sony 8mm tape is
still very much available and so is VHS-C tape. MiniDV tape and the mini-DVD
discs are also available.
See more on Media
Focus:
All
camcorders come with an auto focus system that focuses
on the most obvious part of the image, but as anyone
that has used a camera or shot footage with a
camcorder will tell you, you don't always want to
focus on this part of the image. Also in complex
shooting conditions, such as low light or when there
is very little contrast in the image you are shooting,
the auto focus tends to struggle to find something to
focus on and it is this 'hunting' that often causes
the cam to focus on completely the wrong thing. For
this reason, more and more camcorders now come
equipped with manual focus systems so that the user
can decide just what exactly the cam is focusing on.
Just how much you use this feature will depend on how
serious a videographer you are and how complicated you
want to make your shots. Creative techniques such as
pulling or throwing focus from one subject to another
is practically impossible without a manual focus
control. On most camcorders the control comes in the
form of a rather fiddly dial located somewhere in the
region of the lens. More high end camcorders tend to
have a focus ring around the lens, much like a SLR
camera.
- AUTOFOCUS-
as the name suggests, the camcorder takes care of the
focusing for you. It can sometimes be a little slow, but
it generally does a pretty good job and most (if not all)
autofocus settings can be overridden so you can take care
of the job yourself if you feel so inclined. Autofocus is
usually just fine for home movies.
- AUTO EXPOSURE - This
is the easiest way to ensure you get the proper lighting
on your shots, and it usually works well. Sometimes,
however, like in "backlit" (where the light
source is behind your subject) or low light situations,
you'll want to override it. Most camcorders give you a
couple of varieties on the automatic setting, and some
even let you handle the exposure manually. Remember, too,
that camcorders today have very "low light
level" capabilities, which means they'll perform in
almost less light than your eyes can handle. Beware this,
though, or your footage will look dark and grainy,
regardless of what the light rating says. Still, a
reasonably lit room will give you good results; you should
have an auxiliary light available for emergencies.
Exposure:
All
camcorders come equipped with a selection of Program AE
modes. These are variations on the cam's auto exposure mode.
Each one is designed to deal with a specific type of shooting
scenario to bridge the gap between auto and manual exposure.
Common Program AE modes include Portrait, Sports (for fast
moving subjects), Sand and Snow, Twilight (for low-lighting
shooting), Spotlight (for when the subject has a bright direct
light on them) and Landscape.
When
you select a Program AE mode, the cam adjusts the iris which
controls the amount of light that is let into the lens, and
so, the exposure.
Another common mode is Backlight
Compensation (BLC) which allows more light into the iris to
compensate for a subject which is too dark to expose
naturally. Increasingly more camcorders include a manual
exposure or manual iris control so that you can have complete
control over the amount of light entering the lens and
conversely, the exposure setting. Exposure controls include
Gain and Shutter Speed. The Gain mode is more often used in
low light conditions. It electronically boosts the signal
being received by the CCD chip, but in doing so also increases
the amount of grain (or noise) in the signal, leading to a
loss of picture quality. Shutter Speed can be increased or
decreased in order to control the amount of light coming into
the cam. In bright conditions, increase the shutter speed so
that the amount of exposure is decreased and conversely
decrease the shutter speed in darker conditions so that the
exposure is increased. As with all automatic controls, this
system is not infallible and a manual option is always far
superior.
WHITE BALANCE:
Time
was when you had to point your camera at a white card to
set it up for shooting. A lot of professional equipment
still makes you do this, but virtually all camcorders take
care of this automatically. Some let you do the balancing
act (which ensures that white objects look white
regardless of the lighting conditions) manually as well.
The human eye has no trouble seeing a white piece of paper
as white, whatever the lighting, but camcorders aren't so
clever. With room lighting the paper could appear various
shades of orange or even blue. While all camcorders have a
facility to compensate automatically, a manual option is
useful, particularly in situations where there are two
different lighting sources.
All
camcorders have an automatic white balance control which
ensures that the cam is capable of capturing natural looking
colors under a wide variety of different lighting conditions.
The color of light is not all it seems to the naked eye.
Daylight, for example, is bluish when compared to artificial
light which has a yellow tinge. Because the camcorder is not
able to separate these differences like our brain can, it has
to compensate by adjusting the white balance level.
Increasingly, more and more cams now have manual white balance
controls, because there are always going to be complicated
shooting scenarios where the automatic option will not respond
correctly or in the way you require.
Electronic image stabilization:
It produces almost jitter-free images ? an important feature
with smaller camcorders because they're harder to hold steady.
Without a tripod, you can expect camera shake. The recorded
image is shakiest when the camcorder zooms in on the subject.
The less movement on the videotape, the more enjoyable it is to
watch.
Perhaps
the biggest problem with today's increasingly small cams is
that they are notoriously difficult to keep steady, something the average audience does not appreciate
when viewing your footage. With this problem in mind
manufacturers have developed an image stabilizing system to
compensate for the inevitable shake. The two most common image
stabilization systems are digital and optical and, as always
the optical option is the more preferable of the two. The
digital stabilizer compares the live image with one that was
taken immediately before (this is stored in the digital
memory), the camcorder then works out if the picture has moved
and compensates accordingly. It does this by using the
sections of the image that match most closely the previous one
and enlarging them to fill out the entire frame. The downside
of this is that the enlarging of the image means a loss of
picture quality, something that is still preferable to a shaky
image. The optical solution is controlled by a pair of lens
elements in the zoom mechanism that constantly adjust to the
camcorder's movement to keep the image steady. There is no
adjustment to the image itself and so no loss of quality.
Obviously, this system is more expensive and adds to the
overall weight of the camcorder.
Image stabilization (or sometimes called
picture stabilization) makes memories viewable without
annoying camera shakes. This feature is a must for zoom shots
for easy-to-view close-ups. Stabilization tip: Use a tripod
wherever possible for ultimate stability.
Image stabilization steadies the video, so that the shakiness with hand-held
camcorders is almost eliminated. Manufacturers have different
terms for this feature, such as Electronic Image Stabilizer (EIS)
or Steady Shot. Electronic systems don't generally work as well
as optical, though of course they're cheaper. Want to get
the best result? Buy a tripod.
Sony refers to this feature as Steady-shot. EIS keeps the picture from jumping around when recording with the camcorder in your hand. When you tripod mount the camera, or when you are recording television screens or PC monitors, make sure this feature is turned off. It's very useful for keeping the picture steady when using an unsteady base, but can make the picture look worse in some settings too.
Viewfinder and LCD screen:
Many camcorders come with 2 viewing systems: a traditional
tilt-up viewfinder on the top and a bigger flip-open color
viewscreen on the side. These little color TV screens fold out
from the camcorder body, making it easier to record while moving
around. You'll get a clear view without looking through the
viewfinder and you can play back the recording on the spot.
LCD: A built-in LCD screen allows
you to instantly play back and see what you have just
recorded, and share it with others. If the screen can
tilt and rotate, you can also use the LCD as a
viewfinder for shooting overhead. More expensive models
have bigger LCD screens for increased clarity and may
even have the latest in touch-sensitive
technology.
Since
Sharp launched the first Viewcam back in 1992, LCD
(or Liquid Crystal Display) screens have become
increasingly popular on camcorders and in many cases
are used more than the viewfinder. The advantages of
the screen are that it is possible to take action
without having to hold the camcorder up to your eye,
allowing for a more relaxed 'shooting from the hip'
method. The disadvantage is that using the LCD screen
as a viewfinder you will use up your battery as much
as twice as quickly.
The rough quality of the screen
is decided by the number of pixels the screen has and,
like the CCD, the more pixels, the better the image.
Most LCD screens also have built-in speakers next to
them so that it is possible to view (and hear) what
you have shot without having to connect to a TV set -
ideal for location work.
Most digital camcorders have both
the traditional tilt-up viewfinder on top and a bigger
flip-open color LCD screen on the side.
The LCD (Liquid
Crystal Display) monitor can be used as a viewfinder or a
playback screen. It comes in a range of sizes, and is often put
on a swivel, so that it can be turned around for different
viewing angles. Having a large LCD screen on a camcorder lets you more easily
see what you're recording and facilitates playback previews.
When shopping, try the screen in daylight if possible; some
wash out in bright sunlight, one environment in which you'll
often be using the camcorder. A viewfinder, meanwhile, is
easier to see in daylight and uses less power, extending the
camcorder's battery life.
The
Viewfinder
LCD screens are usually
color and are best for reviewing what you have just shot. Many camcorders incorporate both
kinds of viewfinder, but remember, LCD screens are almost
impossible to use outdoors in bright daylight and eat up
battery life. Back
in the old days viewfinders were invariably black and
white, although it is increasingly the case now that
they are full color. Unlike traditional still
cameras, a camcorder's viewfinder does not provide a
direct view of what the lens is seeing. Instead the
signal from the CCD chip is transferred to the
viewfinder electronically.
All
viewfinders have a small magnifying lens that can be
easily altered according to the individual's eyesight
for a clear focused image.
- Color
Viewfinder
- This is a great
feature, especially for those who don't have an LCD monitor. A
color viewfinder allows you to check the balance of colors, and
see whether the settings need any adjustment. In most cases you
can play your recording back through the viewfinder.
More and more modern
camcorders are equipped with color viewfinders.
However, some folks prefer a black and white viewfinder
as it is easier to get a more accurate indication of
contrast levels. Shooting via the viewfinder, rather
than LCD screen, is recommended to preserve battery
life. The viewfinder on a camcorder lets you review the recording
because it is actually a little TV that displays the image.
Viewfinders can be black and white or color.
Microphones:
Camcorders with microphones mounted in the
front tend to produce better sound than those with microphones
mounted on the top. Many of the more-expensive camcorders offer
zoom microphones that can emphasize the subject's voice and
minimize other sounds, and some also come with a socket to
plug in an external microphone. Either type of microphone can
be very useful when you're recording presentations or speeches
and want to record the speaker but not the audience.
The camcorder microphone records audio in 1 of 3 different
formats depending on the model: mono, hi-fi mono or hi-fi
stereo. The
audio quality of recordings depends largely on the
format being utilized and the way that the soundtracks
are recorded, but generally the mic is the cheapest
element of the camcorder and so, built-in mics are not
without their problems. The very fact that the
microphone is a built-in component of the camcorder
means that there is a very good chance that you will
pick up handling noise or, worse still, that the
camcorder's mechanism noise will be captured.
The best way to avoid this is to use a separate mic
that you plug into the camcorder's mic input (if you
have one). Obviously, the stereo recordings that
higher band camcorders offer is far superior to mono
recordings, although you will need a stereo TV or VCR
to make use of this feature. DV camcorders offer 12
and 16-bit PCM stereo sound and it is worth noting
that if you wish to do audio dubbing (inserting a new
batch of audio over a previously recorded section
without affecting the image), you will need to shoot
your footage using 12-bit PCM stereo sound. More
recently, the likes of Sharp and Panasonic have
offered zoom microphones that are able to adjust their
angle of sensitivity in accordance with the lens' zoom
setting so that the sound of a faraway image appears
to get clearer as the camcorder zooms in on it.
Been to the beach? Playback the waves crashing in stereo. Some
of the older models may only have mono
sound quality.
Zoom
A camcorder's ability to magnify images is known as zoom.
Camcorders have 2 kinds of zooms: optical and digital. Optical
zoom creates a magnifying glass by increasing the focal length
of the lens.
Many camcorders also have digital zoom, which
electronically enlarges the pixels. At excessive digital
magnification, pictures can lose clarity and become grainy. A
digital zoom will typically multiply the optical zoom by a
factor of 2x-3x. For example, with a 22x optical zoom, using a
2x digital zoom will result in a 44x magnification. The zoom
lens allows the user to close in or move away from an object
without them having to move themselves. The lens does this by
utilizing the variable focal length with a wide view at one
extreme and a telephoto at the other.
The lens provides the other possible focal
lengths in-between, giving you complete control over the
image's contents. The power of a zoom lens is denoted by the
zoom ratio: a comparison between the widest and the most
telephoto setting of the lens. To put it into more simplified
terms, a camcorder offering 10x zoom has a focal length at the
telephoto end 10x more than the wide end, while the wide end
is 10x wider then the telephoto end. It is currently the trend
in the camcorder market to offer as big a zoom ratio on a
camcorder as possible, even though this most certainly does
not guarantee a better image. The more powerful a zoom ratio
is, the harder it is to hold the camera steady enough to get a
stable picture (as any little movement is magnified).
There
are two types of zoom - optical and digital. The important
one, as demonstrated by its popularity with professional and
semi-professional videographers, is optical. Optical
mechanisms use two moving lenses to enlarge images. With the
digital option, the image is blown up electronically, which
causes problems, because no matter how it tries, the camcorder
cannot add information that isn't there. Once again, one of
the side effects of a digital zoom is handling shake being
increased and pixelation.
Most modern camcorders have at least a 10X optical zoom, which
should be adequate for general purposes. Vendors typically
advertise the maximum digital zoom, but to achieve that length
of zoom the camcorder enlarges part of the image to fill the
screen, leading to grainy, pixelated, and generally
unpleasant-looking images. At higher digital zoom settings,
the quality is so poor you can't see the image.
Fortunately, most camcorders allow you to turn the digital
zoom off or restrict how far it can zoom in. The spec for
maximum optical zoom is the more interesting figure: It
denotes the maximum zoom that the lens itself can achieve
without enhancement.
Even though the digital zoom claims
of 300x and up sound enticing, this feature lends too much
magnification and images are blurred. The optical zoom is what
you'll want to use, so get a camcorder with a long optical
zoom range (i.e., 16x and higher). Beware of cameras that boast bigger zooms of up to
700x, as this effect is achieved electronically resulting in
very pixelated image. Remember that the longer the zoom, the
harder it is to keep the image steady.
Optical Zoom
This
allows the viewer to focus in on far away objects with the touch
of a button. An optical zoom rated at 16X means that the
camcorder can magnify the image up to 16 times larger than
normal. An optical
zoom uses the actual lens to magnify the image, whereas a
digital zoom uses computer imaging to magnify the image.
Although, digital zooms can go much farther than optical, they do sacrifice quality at any setting above 50X.
Special effects. The special effects
of a digital camcorder seem endless.
Digital
Effects
These
allow even the humblest of videographers to give their videos
a slightly more interesting feel to their work. Effects are
included on almost all camcorders now and include Sepia, Black
and White, Strobe, Twilight, Mosaic, Mirror, Widescreen and
Tracer. Although they tend to be fun to use, they very rarely
have any practical use and are more often than not added by
more serious users at the edit stage as opposed to when
shooting.
Here are explanations of some of the most popular:
- Fade-ins/fade-outs ?
Fade in and out of any scene for a cinematic effect
- Wipes ? Wipes scene to
one side
- Mosaic ? Breaks the
scene into little squares, like a mosaic piece of art
- Sepia mode ? Removes the
color from the scene and adds a brown, antique-like tint
- Titler ? Adds titles
like "Happy Birthday" or lets you program your
own
- Time/date stamp ? Places
time and date onto a scene
- Night shot ? Lets you
record in the dark.
- Still photo mode ? Most
digital camcorders have the added bonus of still photo
capability. Snap a photo at the same time you record.
If you're interested in taking
serious still photos with true photo quality and high
resolution, invest in a digital camera. Many digital camcorders can act as
digital cameras, saving still images to a memory card. Some
can save images at the same resolution as a 2-megapixel
camera. However, most camcorders do not work as well as dedicated still cameras do; they don't
provide the same level of control or the same image quality. However, the quality is good
enough for use on Web pages, emails and for printing at very
small sizes.
Many vendors offer similar models with and without this
feature; if you aren't likely to use it, you can save $100 or
more by choosing the model that lacks it.
Even with higher resolution options, many of the still camera options integrated into DV cameras are second rate at best. If you want great looking digital still shots, use a digital still camera. A newer class of devices has emerged, which builds both a DV camera lens and a still camera lens on the front the DV cam housing. These are slightly more expensive than standard camcorders.
Digital Video Editing. With a personal computer and the right video
editing tools, you can cut what you want and turn those
special moments into a Hollywood production complete with
transitions, titles and special effects.
Connectivity. Look for a digital
camcorder with a FireWire (IEEE 1394) connection, also called
i.LINK and DV In/Out. Now on most MiniDV camcorders, this jack
is the key to digital editing.
Though you can use a video
capture card or device to import video into your PC, you'll
love the speed of transferring it through a FireWire or i.LINK
port. Video can transfer through an IEEE 1394 at up to 400
Mbps, much faster than a standard port. The camcorder connects
right to the PC for easy transfer.
All
camcorders come with a range of sockets that are vital
to getting your footage out of the camcorder and into
an edit controller, VCR or PC for editing. All cameras
have composite analog outputs (the red, white and
yellow connections) and more and more
camcorders have S-video connections. DV camcorders
also come with a DV output so that you can output your
footage to a PC for non linear editing. However, not
all DV camcorders have a DV input, this is because it
pushes the price of the camcorder up. Without a DV input, it
is not possible to get your edited footage back out of
your PC and into your camcorder. A range of companies provide accessories called widgets that will
re-enable the DV input so that you can then get your
footage back. Other sockets
that DV camcorders have that analog models don't,
include connections to PC (USB and RS232) for
downloading digital still images and MPEGs (compressed
videos usually around 15 seconds, that you can email
to friends and family) and analog inputs so that you
can digitize old analog footage. Further useful
sockets include a headphone output, so the user can
monitor sound levels while recording, and a microphone
input so that you can use a separate mic to avoid
picking up handling noise from the camcorder.
If you are planning
on saving edited home video back onto tape, check that
your camcorder is equipped with DV in/output. S-Video
outputs are for superior quality dubbing or display on
more modern TVs.
Microphone input jack
This is essential if you want to use a specialist
microphone that is capable of picking up more distant sounds,
or if you want to eliminate the noise of your
camcorder.
Headphone out jack
This is imperative if you want to hear the sound that is
actually being recorded before it is too late to do anything
about it or if you want to listen to your recordings privately
without disturbing anyone. The headphone will give you much
better sound than any built-in speaker. Camcorder built-in
speakers are very small and cannot give you good sound
quality.
Edit sockets
Edit sockets are highly recommended if you want to use the
camcorder with an edit controller for accurately cutting your
movie and for arranging the shots in the right
order.
DV-out socket
Necessary for downloading digital video and sound to a
suitably equipped computer or other digital device. Also known
as FireWire, this super-fast transfer system is a great way of
swapping your recordings between your camcorder and
PC.
DV-in socket
Necessary for recording a movie from a computer, where it
has been edited, back onto the camcorder. This is physically
the same socket as the DV-out. However, the DV-in capability
is only available on some machines.
Batteries:
All camcorders use rechargeable batteries that are supplied
with the camcorder. There are three main types of battery
used. Nickel cadmium, or nicad, is the oldest type. The
downside of these is that they have to be completely run
down before they can be recharged. Nickel metal hydride batteries are similar in size to
the nicad, but they can be topped up. Lithium-ion batteries tend to be smaller and lighter,
and can also be topped up when
convenient.
Most camcorders won't last more than an hour with the included
batteries. So factor in the cost of a higher-capacity battery
that can keep the camcorder going, if you think you'll need
it. A higher-capacity battery that can double the battery life
typically costs $50 to $100.
How long will the battery last?
Today's camcorders use far less power than older models, so even
with a standard battery, you get more recording time.
Power-consuming features like zoom or LCD viewscreens tend to
decrease the life of a battery, but optional super high capacity
batteries are available for many models.
Back
in the 1980s virtually all camcorders used nickel cadmium (Nicad)
battery packs. The advantage of these batteries was that they
were relatively light, small, cheap and reasonably powerful,
however they did have a short lived performance which tended
to deteriorate very quickly when subjected to unnecessary
'top-up' recharging. The cells inside the battery rapidly
acquired varying states of charge and the battery as a whole
developed a so-called 'memory effect' that prevented it from
storing a full charge.
On
some models this would mean that recording times dropped by as
much as half an hour. The solution was to fully empty the
battery of power before recharging. By the early '90s, many
camcorders were being supplied with more efficient and almost
memory-free nickel metal hydride (NiMH) batteries. These had
the advantage of a slightly higher power density (ie they pack
more charge into a smaller space) and combined with more
efficient electronics and deck mechanisms, were capable of
lasting up to 40 and 50 minutes between charges on mid-range
cams. Once the first DV cams started to appear on the market
by the mid nineties, battery technology had similarly moved
on. Now Lithium-ion (Li-ion) battery packs have become the
norm. They offer even higher power density than NiMH and are
capable of running times between 60 and 90 minutes. Charging
times are a bit longer and they tend to be more expensive than
other batteries to replace (or should you want a spare),
however, you get a more sophisticated battery with better
power than ever before.
All camcorders
use rechargeable batteries. The type of battery can make a big
difference in how long you can record and play back a tape. The
InfoLithium battery is currently the best one on the market
since it tells you exactly how much power is remaining and it
also does not suffer from the dreaded "memory effect"
that some other types have (NiCad for example).
Sony NP-FM50 battery
Battery Technology
ACCESSORIES:
It makes sense to have extra
batteries, because they always run out when you're about to do
(or halfway through) your most important shot.
Carrying cases
are nice, too, especially for bigger or more expensive
camcorders; just dangling them from the shoulder strap lets
them flop around and possibly bang into something. If you're
planning to watch videos on vacation, make sure you bring
along the adapter that lets you hook the camcorder into an
ordinary TV. Most camcorders should come with such an adapter.
Your camcorder should come with an AC adapter/charger so you
can operate on house current and recharge the battery in the
camera.
Camcorder Strap: For added safety, attach the strap firmly to
the camcorder and carry it over your shoulder while taking videos.
Low-light
recording: Many camcorders can record in very low light,
either with the help of an included infrared light (which you
can't see, but the camcorder can) or through a special long
shutter mode that makes the most of the existing light; some
more expensive models offer both. These can be useful in
poorly illuminated settings, such as when you're capturing a
camping trip or the creatures entering your yard after
nightfall. Low-light footage may be grainy, however, and
camcorders that use an infrared light may capture only
black-and-white video.
Video
Features: Listed are some features for video flexibility.
1) Nightshot - For
videos in
total darkness 2) Webcam function - For online
interaction 3) Widescreen Mode - Capture
in 16:9
format
- DATE/TIME LABELING -
Need to keep a record of when you shot your movie? Just
about any camcorder will let you, and some will let you
display the information for just a few seconds before it
disappears from the screen.
- EDITING - Some
camcorders will let you do some reasonably sophisticated
editing right in the machine. This still doesn't replace
two units and a switcher for sophistication, though. If
you're serious about editing, buy the extra equipment.
- FADE OUT -
This adds a professional touch to your movie, by fading
the picture to black and fading your next shot in from
black. It makes scene transitions look a little more
'arty' and can also make editing later easier 'cause
there's a distinct break between shots.
- MICROPHONE JACK -
This is the plug for the remote
mic we mentioned earlier, for people who want to maximize
the sound from their subject while minimizing extraneous
stuff like wind or the camcorder operator.
- REMOTE CONTROL - Wonderful
for playing back your video, or getting into the action
yourself. For the latter, mount the camcorder on a tripod,
set up the scene through the viewfinder, then run into the
action and start recording via the remote.
- SHUTTER SPEED -
This is the number of images recorded each second (the
number of times the shutter opens and closes each second).
It's usually automatic, but many camcorders let you
control it manually, too. A faster shutter speed will give
you a cleaner slow motion playback, which is nice if you
want to study your golf swing, or a hummingbird assaulting
your garden. Faster shutter speeds require more light to
do them justice.
- TITLE GENERATOR - A
(usually) built in "character generator" that
lets you put your own credits on your home movie. Some of
these can be quite sophisticated, with different fonts,
colours, etc. while others just give you basic titles.
- WIDESCREEN - Some
camcorders let you "letterbox" your home movies,
giving you the same widescreen look you can get with
laserdiscs. This is kind of cool, especially if you're
going beyond the simple vacation video and attempting
something artistic. Widescreen is also nice if you're
shooting in spectacular vistas.
- ZOOM RATIO - this
indicates how apparently close you can get to your
subject. Common ratios are 8:1 or 12:1. Many camcorders
also offer a "digitally-enhanced" zoom that
gives much higher ratios, but remember that these are
electronically "fudged" and may not give the
same quality as a real zoom.
Shooting pictures in low
light
Low lux recording
Most camcorders are capable of producing an image in pretty
dingy situations. Although some are better at this than
others, the picture quality does suffer in this mode,
resulting in a grainy image with poor color. The solution is a
video light.
Video lights
These are used for indoor shots after dark to add some
artificial light. Some camcorders have lamps built in but video
lights of various degrees of brightness and designs are
available. These are only useful for lighting objects a few
feet away.
Night-vision modes
Some camcorders have a special mode for shooting in
complete darkness. They use a built-in infrared light, which,
although invisible to the eye, can be seen by the camcorder.
The system is only effective over a few feet and only provides
you with black-and-white or green-and-white footage. Some models
start recording automatically when movement in front of the
camera is detected.
Flash memory Slot:
The option of
digital still images makes some camcorders more
versatile and appealing than ever before. Larger
capacity memory cards can be purchased as optional
extras.
Integrated editing
system
Some camcorders have a built-in edit controller. You mark
the scenes that you want to keep and they can then be copied
in the order you want to your home VCR. The system uses the
camera's remote control handset to send the relevant
stop/start commands to the VCR.
Playing videos through the TV:
For the best picture quality,
connect the camcorder directly to the TV's composite (RCA type)
input, or in the case of a Hi8 or MiniDV camcorder, an S-video
input. Hooking up your camcorder will be easier and faster if
your TV has A/V inputs on the front panel.
With older style TVs with a single RF input for audio and video,
you can easily run your camcorder's signal through your VCR's
RCA-type audio/video inputs, which are on most models. If your
TV and VCR don't have these inputs, pick up an accessory RF
modulator/adapter.
Camcorder Prices
VHS-C and
8mm formats generally have lower prices than S-VHS, Hi-8 and
digital formats. However, as a model becomes older, its price
drops. Analog models such as most VHS-C and Sony's 8mm cost a few
hundred dollars. You might even be able to find a low-end model
for under $200. Digital models such as Sony's Digital8 are around
$250-$300. Digital MiniDV models, which are the most abundant,
range from about $300 to $700 while the digital Mini-DVD models go
for about $600 to $900. Models above $1,000 are usually high-end,
feature loaded, brand new technically or professional type
camcorders.
Why is digital
better for video recording?
Videotape is an analog system in which images and sound are
captured and recorded as continuously variable electrical signals. Analog
recordings have one major disadvantage; interference and time can hurt the
electrical signal recorded on the tape. You may have already noticed the
effects if you've played older tapes.
Digital recordings do not
have the wide signal variations found in analog recordings and are immune
to most of the signal problems associated with analog sources.
Digital Quality
Stronger Source Material: As with any audio or video
electronics, the goal is to reproduce the original picture and sound as
accurately as possible. Digital recording, by reducing the effects of
interference and "noise", delivers pictures and sound that are much closer
to the original.
Higher Resolution: Just like DVD, the
digital formats are capable of delivering over 500 lines of horizontal
resolution. Compare that to the 400 lines available from S-VHS and Hi-8,
or the 240 lines from VHS and 8mm — the difference is stunning. (Remember
that achieving the highest quality depends on the TV you will be
using.)
Color Accuracy: Signal interference in analog
systems can cause color to smear or blur. On analog tapes colors may bleed
from one area to another, much like coloring outside the lines. The
reduction of noise and blur in digital video means color that is far more
lifelike.
Audio: With the popularity of CDs, most people
are familiar with digital quality sound. Both the MiniDV and Digital8
standards permit two types of audio recording:
16-bit and 12-bit audio recording. For the
highest quality sound and flexibility, make sure the camcorder has the
ability to choose between the two. 16-bit recording offers the
highest quality recording. It fills the area on the tape devoted to sound
with as much data as possible. More data on the tape means better quality
playback.
12-bit recording: This mode records two stereo channels and
allows two independent soundtracks to be "overlaid." For instance, you can
add background music or narration over the original soundtrack. This mode
offers more flexibility, but slightly less dynamic range and sound
quality.There are three different levels of sound quality available
from camcorders. Non-stereo recording is offered on the most
basic models, this may or may not record a wide enough range
of frequencies to be classed as 'hi-fi' quality. Stereo
soundtracks found on analogue camcorders always offer hi-fi
reproductions. Digital camcorders offer digital sound
recording, which produces a soundtrack that has almost as much
audio detail as a CD.
Accessory Shoe: Ideal addition
for an external microphone or flash. A 'Hotshoe' feature
provides power direct to the accessory attached.
FireWire / iLINK
FireWire is the standard for transferring video footage from a DV camera to a PC. Depending on the manufacturer, it may also be referred to as iLINK or IEEE 1394.
Analog Connectors
Most DV cameras provide an analog output connection for displaying movies on a TV screen. Many also provide an analog-in path through the same connection for transferring footage from a VCR or Hi8 camcorder to DV tape or passing it through to a PC. If you don't have any old videos, this isn't a necessary, however, the analog connection on a DV camera is one of the most straight forward ways to transfer VHS tapes to a digital format.
Remote Control
We may have too many remote controls in our lives already, but a remote for your DV cam comes in handy more frequently than you think. Aside from previewing your movies on the TV at home, having a remote for your DV cam is useful for recording shots where you want to include yourself, mounting a camcorder in a fixed location and maintaining the ability to stop and start recording from a distance, or even just scanning the contents of a DV tape without needing to keep your finger pressed on the fast forward button on the camera body.
In addition to the remote control, some camcorders come equipped with a special jack called
Control-L or LANC, identified on the camcorder with the letter
L. The jack connects to external edit controllers that are used
in more advanced editing applications. For simple editing, some
models have built-in edit controllers that work with your
existing VCR, although they're not as accurate as external
controllers.
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