Depth-Of-Field; Diopter Correction Lenses - Mamiya 7 User Manual

Depth-of-Field

The depth-of-field varies according to
the aperture. The smaller the aperture
(f/8, f/11, f/16...) the greater the depth-
of-field; the larger the aperture (f/8, f/
5.6,...) the smaller the depth-of-field. To
take pictures which are sharp from
foreground to infinity or when taking
snap shots, the focusing range is
extended or depth increased by using a
smaller aperture. When the subject is to
stand out, with the background out of
focus, a larger aperture is appropriate.
22
The depth-of-field scale on the lens
indicates depth-of-field in terms of the
distance between subjects on both
sides of the scale. For example, when a
80mm lens is stopped down to f/8 and
f/22, respectively, all objects located
within the ranges shown
illustrations above will be sharp.
* Refer to the instructions attached to
individual lenses for
depth-of-field tables.

Diopter Correction Lenses

Six types of diopter correcting lenses
are available for near/far-sighted
people. Mount as indicated above.
Powers available are: +3, +2, +1, -1, -2
and -3.
in the +: Far-Sighted
-: Near-Sighted
specific