R. B. Burrows
Figure 4-3.35mm single-lens reflex (SLR) camera.
diaphragm to control the brightness of the image, a
means of holding the film at the back of the camera, and
a viewfinder so the photographer knows what the image
is, and of course a body to hold it all together.
Simple cameras, such as the one described, have limited
capabilities. They have a fixed-focus lens that cannot pro-
duce a sharp image of a subject closer than about 6 feet.
Also, the shutter speed and diaphragm are preset and
cannot be altered. The capabilities of a simple camera can
be enhanced by adding features to perform the following:
Change shutter speed to capture images of
Use synchronized electronic flash
Meter the image brightness of the subject to
either manually or automatically adjust the
diaphragm and shutter speed
Figure 4-3 illustrates a common 35mm camera and
identifies the various camera controls.
Focus on subjects at various distances
Adjust the lens for different lighting conditions
Change various lenses quickly to change focal
length and fields of view
In this chapter, the characteristics and functions
commonly found on most cameras are discussed. No
single camera can meet the requirements of every
photographic assignment. There are a number of
cameras to choose from in the fleet. These cameras