Olympus OM-2 - Manual (Page 15)

FOCUSING
Look through the viewfinder and turn the focusing
ring in either direction until your subject appears
sharpest. The split image will be vertically aligned
in the central spot of the Focusing Screen or a
shimmering effect of the microprism ring around
the central spot will disappear when critical focus-
ing has been achieved.
NOTE: You can determine the distance between
the subject and the film plane by reading the dis-
tance scale on the focusing ring after setting criti-
cal focusing. The actual distance is indicated op-
posite the red central index mark on the lens
mount ring; the white scale indicates this distance
in meters and the orange scale in feet.
(For Focusing Screen replacement read pages 28,
59 and 60).
Out of focus.
Microprism
Ring
Rangefinder
Spot
Matte Field
In focus.
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