NIKKORMAT FT2 - Depth-of-Field Scale

DEPTH
OF FIELD
Depth-of-Field
Scale
Depth
of
field
can be
read
from
the color-coded
scale
.rrgr"ued
on
the
milled
ring. The
pairs
of colored
lines
.olr.rporrd
to
f/numbers
of
the same
color. To
find
the depth
of
field at a particular
aperture
first
focus
the
lens on
the
subject (or
set
the
lens-to-subject
dis-
tance
on
the distance
scale). Then
check
the
numbers
on
the
distance
scale
opposite
the colored
lines
which
match
the
taking aPerture
of
the corresPonding
color
to
find the
depth
of
field at
that aPerture.
For
exanlple,-f116
on
the
aperture
ring
of-the 50mrn
f/L.4 lens-is blue.
With
tlrc,lens
prefocused
at
15
feet
(4.5m),
the
numbers
on
the distance
scale
opposite
itt.
Ut".
lines
show
that depth
of
field extends
from
8
feet
(2.4m)
to
infinitY
("';.
By stopping
down
the
lens
on1y,
the depth
of
field can be
increased,
as
illustrated
by
the
following
three
photographs:
L.
Lens
at
f/4. Small
depth
of
field
with
only main
subject
in
focus.
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