Kodak Retina IIc

To permit instant reading of the depth of field
for any lens opening and distance, there is a
DEPTH-OF-FIELD SCALE. This scale is composed of
the focusing scale and a scale of numbers cor-
re s ponding to lens openings arranged on either
side of the focusing index.
Suppose you have set the aperture to f/8 and the distance to
about 9 feet; this is how you read off the depth of field: To the
left of the focusing index the line marked with the figure 8 Ceor·
responding to the lens opening)
is opposite 6 feet. To the right
01 the index another line marked
with the figure 8 points to about
16 leet. This tells you that with
a
settin g of about 9 feet at f / 8
you
have a depth-of-field zone
extending from about 6 to 16
feet. Within this zone everything
will be sharp.
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