Image Processing Reference
In-Depth Information
All dslr cameras come with battery and power adapter options. Usually, when
you buy a camera the power adapter does not come with the camera. You
get a battery and battery charger. You might have to buy the power adapter
separately. I feel that this is a worthwhile investment. Many of these frame-
by-frame techniques require shooting in locations that are not near power
sources, so the batteries are critical to operating the camera. The risk is, of
course, that the camera will run out of power before a shot is complete. Yes,
you can change the battery in mid-shot if you have a spare charged battery
on hand and if you can get to the battery without disturbing the camera.
The issue is that you may risk bumping the locked-down camera in mid-
shot, compromising your image stability. You might potentially get a color
shift in the digital camera once you change the battery (although this can be
corrected in postproduction, because these shifts are usually minimal). Many
cameras have their batteries located on the bottom of the camera body, and
if you have mounted your camera on a tripod or a solid flat surface, then you
have to move the camera to change the battery. Ultimately, using a power
adapter from the beginning of each shot eliminates this problem and allows
you to shoot for longer periods of time uninterrupted.
Fig 5.10 a shot of the open
camera bottom, battery, power
adapter, and charger.
The settings for manual controls are easy to find. A dial for the iris and shutter
changes is located on an area near the read-out panel, usually located on
the top of the camera. There may be a switch along the side of the lens to
put it in manual focus mode. You have to spend a little time with the camera
to understand how it works, but that time is well worth it.
A “menu” button on the back allows you to program your camera. Many
features are offered in this area, including viewing options, white balance,
formatting (erasing all of your images on the camera), and image and file
sizes. The image size of your picture is an important choice. New cameras
usually have three sizes of jpeg files and what is known as raw . The raw
image is all the information that the image sensor can give you with no
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