Determining The Exposure - Canon AT-1 Instructions Manual

Determining the Exposure
Turn the camera toward the subject and
look into the viewfinder to insure that the
meter needle swings and rests still somewhere
between the upper and lower exposure
metering index marks. Then, turn the shutter
speed dial and/or the aperture ring until the
circular aperture needle bisects the meter
needle. These are the steps for getting the
correct exposure. On most occasions,
it
is
more convenient to predetermine the shutter
speed then turn the aperture ring.
The upper and lower halves each express half
an f/stop gradation; the full width of the
aperture needle is equivalent to one flstop.
Thus, the setting of the meter needle and
aperture needle can be precisely controlled
inside the viewfinder enabling finer adjust-
ment of the exposure.
Exposure determination (matching
needles) should not be performed while the
shutter button is depressed. It will cause a
slight, variable error depending on the
condition of the battery.
Properly Adjusted
33