Canon AE-1 Manuale - Pagina 15

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Frame Counter

The shutter release button is designed to function as the main switch of the camera to activate

the AE meter and shutter operation. The shutter has a magnetic release, so the meter can be

read by pressing the shutter button halfway with light pressure. By depressing it further, the

shutter will be released. The magnetic release shutter button enables faster metering for

shooting in succession than the mechanical release method does. There is also less chance for

camera shake. While rewinding film, the frame counter counts back the frame numbers. The

starting position "S", 0, and the even numbers 2 to 38 are displayed by the counter. Numbers

20 and 36 are marked in orange to call your attention to the end of film cartridges such as are

today commercially available. The frame counter cannot count higher than 38.

Operation for General Photography The AE-1 is an Automatic Exposure camera with a

shutter speed priority system which electronically controls the aperture opening for the given

shutter speed to ensure the optimum exposure. Canon's shutter speed priority system has been

adopted by this camera in the idea that a photograph is an instant snatched from elapsing time.

The shutter speed priority system is ideal for catching fast-moving subjects, especially at the

decisive moment. Even most of the models in Canon's EOS System of AF cameras have this

shooting mode a standard feature. Furthermore, the shutter speed priority system allows you

to control image blur at will and to emphasize the movement of the subject. For action or

other such situations, you can realize all photographic aspirations.

Setting the Shutter Speed The shutter dial controls the length of time that light is allowed to

reach the film. On the shutter speed dial, shutter speeds from 1/1000 to "B" are marked in

white, while the 2-second speed is marked in orange. Each shutter speed gradation is twice or

approximately twice the preceding speed, beginning with 1/1000 sec. (1000).

The frame counter is an additive type which counts one frame

every time the film advance lever winds the film. When the

camera's back cover is opened, the frame counter automatically

resets itself to the "S" position.

Thus, the light reaching the film at 1/250 second is half the light

reaching it at 1/125. The numbers on the shutter speed scale

represent the corresponding fraction of a second (125=1/125),

with the exception of 1 and 2 (marked in orange) which stand for

1 and 2 seconds respectively.