Depth-Of-Field - Canon AE-1 Instructions Manual

shutter speed dial until the meter needle on
the right of the viewfinder reaches the fhtop
desired.
Depth-of-Field
When a certain subject is brought into
focus, there is only a limited range in the
foreground and background of the subject
which can be kept clearly in focus. This zone
of sharpness i n the subject field is depth-of-
field.
There are two methods of confirming the
,
extent of the depth of the field: by stopping
I
I
down the lens diaphragm or by reading a value
from the depth-of-field scale on the lens.
Confirming the Depth-of-Field by
1
Stopping-Down the Lens Diaphragm
1. Wind the film and take an exposure read-
ingfor the subject you wish t o shoot.
2.
Move the aperture ring off the "A" mark
1
and then set the aperture ring t o the aperture
indicated in the viewfinder during the ex-
posure reading (or t o the desired aperture).
,
3.
Pres the stopped-down lever until
it
locks. Look into the viewfinder t o visually
check the depth of field.
Stoppingdown the
FD
lens should only
be done after advancing the film. I f the film
i s
not advanced. the stoppingdown of the
lens diaphragm would only be possible down
t o the aperture of the previous exposure.
Also. when the aperture ring i s set at the "A"
mark, the stoppeddown lever cannot be
pressed in. Please note that stoppeddown
metering is impossible when the FD lens i s
mounted o n the AE-1.
4.
To cancel the stopping-down of the lens,
press the stopped-down lever's release button.
5.
Be sure to turn the aperture ring t o the
maximum aperture before resetting it t o the