A. Depth of Field Preview Button
Pressing Depth of Field Preview Button (18)
(Fig. 41)
will set the lens at the corresponding opening you
previously set on F-Stop Ring (24). This will enable you to preview the area of acceptable sharpness in the
picture you take. The viewfinder will become dark corresponding to the f-stop you previously set on F-Stop
Ring (24). Depth of Field Preview Button (18) will automatically return to its original position when you release
it and the viewfinder will become as bright as before.
B. Depth of Field Scale
After you have set the lens opening and have focused the camera. the area of acceptable sharpness in front of
and behind your subject can be also determined on Depth of Field Scale (23).
Locate on Depth of Field Scale (23) the two numbers corresponding to the f-stop you have set on F-Stop Ring
(24). The distance between these two f-stops on Distance Scale (22) will be an area of acceptable sharpness in
your picture. For example, if your lens is focused at 2 meters (6.7 ft.) and you shoot at 16 (f/16), the area of
acceptable sharpness will be from 1.5 m (5 ft.) to 3.2 m (10.7 ft.), by reading Distance Scale (22) opposite the
both sides of the " 16'' numbers on Depth of Field Scale (23)
(Fig. 42)
.
Tips for Better Results
* Do not depress the Shutter Release Button (11) when depressing Depth of Field Preview Button (18).
INFRARED PHOTOGRAPHY
For infrared photography using infrared films. a correction of Distance Scale (22) is necessary because "infrared
light rays" focus on a film plane slightly behind that of ''visible light rays''.
1. Normally focus on
your subject and note
the camera-to-subject
distance opposite the
distance index line on
Distance Scale (22).
2. Turn Focusing Ring
(21) until this camera-
to-subject distance
setting is opposite the
infrared index line.
For example, if
Distance Scale (22)
reads 5 m (16.5 ft.)
after focusing, merely
shift the "5" scale to
the "a" (red) position
(Fig. 43)
.
