Olympus OM-PC, Instruction Manual

Page: 46 / 78

DEPTH OF FIELD
Depth of field is the area of acceptable sharpness
in front of and behind the subject in focus. As you
get closer to your subject or as you open your lens
(e.g. from F16 to F2.8) the depth of field becomes
shallower. By stopping your lens down (e.g. from
F2.8 to F16) or getting farther away from your
subject this depth of field can be increased.
The table below shows that when the camera-to-
subject distance is 3m, the depth of field at F16
ranges from 1.93m to 6.93m.
As you press the preview button, looking through
the viewfinder, you can ascertain the actual depth
of field.
Depth of Field Table (F1.8 & F1.4 50mm Lenses)
Circle of least confusion 1/30mm
The double series of numbers engraved on the
depth of field scale represent F stops: F4, F8 and
F16. Once you have focused on your subject, all
objects within the distance range indicated on the
lens distance scale between the marks for the F/
stop you have selected will have acceptable sharp-
ness.
* For other lenses, see the lens
instruction manual.
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