Canon V - Manual (Page 20)

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The Depth-of-Field Scale (21) shows
you the range of objects which will also
be in focus on the film. This range will
vary with the f;stop you have chosen. The
larger the lens aperture, the smaller will
be your depth of focus. For example: with
an f:stop of f:4 and with the object you
have focused on at 25 ft. (*) your camera
will give you a sharp focus picture from
approximately 18 feet away from the
camera to 40 feet. At f : l l you will get a
sharp picture from 12 feet to infinity (oo).
’■'(Illustration shows 25 ft. on Lens Distance
Scale (19) opposite Lens Distance Scale
Index Mark.)
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