Nikon Nikkormat FT2 User manual

|
Nikkormat
INSTRUCTION
MANUAL

NOMENCLATURE
Meter
Coupling
Pin
|
Couples
the
exposure
meter
to
the
lens’
auto
diaphragm.
Neck
Strap
Eyelet
Mirror
Lock
Shutter-Speed
Index
Slide
downward
to
lock
the
Align
with
the
desired
shutter
speed.
mirror
up
out
of
the
optical
path.
Self-Timer
Trips
the
shutter
in
8
seconds
delay.
Lens
Release
Button
Unlocks
the
lens
for
removing
or
changing
lenses.
ASA
Lock
y
Camera
Back
Latch
»~
Press
to
open
the
carhera
back.
Shutter-Speed
Lever
ASA
Film-Speed
Index
Adjusts
the
meter
for
the
ASA
Film-Speed
Scale
speed
of
the
film
used.
Range:
12-1600
ASA.
Battery
Chamber
Houses
the
silver-oxide
battery
that
powers
the
meter.
Tripod
Socket
Camera
Back
Rewind
Button
Se
=
Hinged
to
swing
open
from
Press
to
rewind
the
film.
the
side.

Distance
Index
Infrared
Mark
Lines
up
with
the
prefocused
distance
to
compensate
for
shift
in
focus.
Aperture
Ring
Sets
the
lens
diaphragm
to
the
desired
f/number.
Maximum-Aperture
Scale
Check
to
see
whether
the
meter
is
set
for
the
maximum
aperture
of
the
lens
being
used.
Depth-of-Field
Preview
Button
Press
to
preview
how
much
background
or
foreground
is
in
or
out
of
focus.
Flash
Terminal
Accepts
a
flash
synch
cord.
Rewind
Crank
Fold
out
to
rewind
the
film.
Meter
Window
Accessory
Shoe
Finder
Eyepiece
Permits
comfortable
viewing,
composing
and
focusing.
Hot-Shoe
Contact
_
Frame
Counter
_
Indicates
the
number
of
Distance
Scale
Depth-of-Field
Scale
Color-coded
markings
give
depth-of-field
at
different
apertures.
Focusing
Ring
.
Easy-to-grip,
knurled
surface
for
quick,
accurate
focusing.
Aperture
Indicator
Dot
Aperture
Scale
Meter
Coupling
Prong
Connects
to
the
meter
coupling
pin.
Shutter-Speed
Scale
Speeds
from
1/1000
to
1
second
plus
B.
Shutter
Release
Button
path
screw
thread
or
cable
release).
frames
exposed.
Film-Advance
Lever
Advances
the
film,
cocks
the
shutter
and
operates
the
frame
counter.
Also»
switches
the
built-in
exposure
meter
on
or
off.
Film-Plane
indicator
Shows
the
exact
position
of
the
film
plane.

CONTENTS
Nomenclature
Foreword
Loading
the
Camera
Film-Plane
Indicator
Film-Advance
Lever
Frame
Counter
Film-Speed
(ASA)
Setting
Exposure
Controls
Setting
the
Shutter
Speed
Setting
the
Aperture
Exposure
Measurement
Turning
On
the
Meter
Centering
the
Needle
Getting
the
Right
Exposure
How
to
Hold
the
Camera
Focusing
Shutter
Release
Flash
Synchronization
Depth
of
Field
Depth-of-Field
Preview
Button
2,
5
6
8
8
9
9
10
11
11
12
12
13
14
15
16
17
18
19
Depth-of
Field
Scale
Changing
the
Lens
Lens
Mounting
Maximum-Aperture
Scale
Self-Timer
Mirror
Lock
Infrared
Photography
Silver-Oxide
Battery
Exposure
Measurement:
Special
Cases
Stop-Down
Exposure
Measurement
Repro-Copying
Slide
Copying
Accessories
Lens
Hoods
Filters
Eyepiece
Correction
Lenses
Finder
Eyecup
Camera
Care
Features/Specifications
Nikon
Warranty

FOREWORD
The
Nikkormat
FT2
offers
the
high
quality
performance
and
durability
common
to
Nikon
cameras,
but
with
the
basic
simplicity
of
de-
sign
that
has
made
the
Nikkormat
camera
popular
with
amateur
and
professional
alike.
Systematically-positioned
controls
for
picture-
taking
ease,
a
convenient
flash
unit
mount
for
simplified
flash
photography
and
the
extensive
possibilities
of
the
Nikon
System
of
Photo-
graphy
further
enhance
the
capabilities
of
the
Nikkormat
FT2.
To
ensure
you
get
the
best
results
from
your
Nikkormat
FT2,
read
this
instruction
book
carefully
and
practice
using
the
controls
be-
fore
you
load
film
into
the
camera.
Follow
the
suggestions
on
camera
care
on
page
30
and
you
will
receive
many
years
of
reliable
service.
The
Nikon
Warranty
which
comes
with
your
Nikkormat
FT2
is
your
assurance
of
prompt,
courteous
service
and
complete
satisfaction.

LOADING
THE
CAMERA
Press
down
the
camera
back
latch
on
the
side
of
the
camera
and
the
hinged
back
will
spring
open.
Pull
up
on
the
rewind
knob
and
drop
a
film
cartridge
into
the
film
chamber
with
the
film
leader
pointing
towards
the
take-up
spool.
Now,
push
down
the
rewind
knob
to
hold
the
cartridge
in
place
and
insert
the
end
of
the
film
leader
into
any
one
of
the
three
slots
in
the
take-up
spool.
Rotate
the
take-up
spool
as
shown
in
the
illustration
so
that
the
film
passes
under
the
spool
with
its
emulsion
side
(dull
side)
facing
out.
Make
sure
that
the
perforations
along
the
edges
of
the
film
mesh
with
the
sprockets.
Close
the
camera
by
pressing
on
the
back
until
it
snaps
into
place.
Fold
out
the
rewind
crank
and
turn
it
gently
in
the
direction
of
the
arrow
until
you
can
feel
a
slight
tension.
This
will
take
up
any
slack
in
the
film
cartridge.
Be
careful
not
to
exert
too
much
pres-
sure
on
the
rewind
crank.
Loading
exposes
the
first
few
inches
of
the
film.
To
dispose
of
this
exposed
film,
wind
the
film
advance
|

lever
and
make
two
blank
exposures.
Watch
the
rewind
knob
to
see
if
it
rotates
in
the
direction
opposite
the
arrow
while
the
film
is
being
advanced.
This
will
indicate
that
the
film
has
been
loaded
correctly
and
is
being
advanced.
The
frame
counter
on
top
of
the
camera
should
now
rest
at
‘‘0”.
Advance
the
film
one
more
frame
and
you
are
ready
to
take
the
first
picture.
Caution:
Do
not
load
the
camera
in
bright
sunlight.
If
no
other
shade
is
available,
shade
the
camera
from
the
sun
with
your
body
while
loading.
To
unload,
press
the
rewind
button
on
the
camera
baseplate,
unfold
the
rewind
crank
and
turn
it
with
a
constant,
gentle
pressure
in
the
direction
of
the
arrow.
Avoid
uneven
or
excessively
fast
rewinding.
When
no
more
tension
can
be
felt
and
the
crank
turns
loosely,
the
film
has
left
the
sprockets
and
the
camera
may
be
opened.
Pull
the
rewind
knob
up
slightly
and
the
film
cartridge
will
drop
out.
The
rewind
button
will
pop
out
again
as
soon
as
the
film
advance
lever
is
stroked.

LOADING
THE
CAMERA
eee
Film-Plane
Indicator
Film-Advance
Lever
The
film-advance
lever
simultaneously
advances
the
film,
cocks
the
shutter
and
operates
the
frame
counter.
It
also
serves
as
an
on-off switch
for
the
exposure
meter.
Stroke
the
film-advance
lever
with
the
right
thumb
in
a
single
stroke.
A
built-in
locking
device
prevents
the
shutter
from
being
released
unless
it
is
fully
cocked
and
the
film
has
been
advanced
a
full
frame.
The
film-advance
lever
springs
back
to
its
original
posi-
tion,
with
ample
clearance
for
the
thumb,
after
each
stroke.
However,
the
meter
will
remain
in
the
“on”
position
until
the
lever
is
pressed
flush
against
the
camera
body.
The
(e)
mark
on
top
of
the
camera
body
shows
the
exact
position
of
the
film
plane.
This
is
important
to
know
when
measuring
the
film-to-subject
distance,
especially
in
close-ups
and
macrophotography.

Frame
Counter
The
frame
counter
located
on
top
of
the
camera
works
automatically
to
show
how
many
frames
have
been
exposed.
The
numbers
20
and
36
are
colored
red
to
correspond
to
the
number
of
frames
in
a
standard
35mm
cartridge.
The
frame
counter
stops
just
past
the
36-frame
mark
and
resets
itself
automatically
to
““S?,
two
frames
before
‘0’,
when
the
camera
back
is
opened
for
reloading.
Film-Speed
(ASA)
Setting
Some
films
are
more
sensitive
to
light
than
others.
A
film’s
sensitivity
is
commonly
known
as
its
“speed,”
expressed
in
ASA
numbers.
In
order
to
work
with
films
of
different
speeds,
the
Nikkormat
FT2’s
light-meter
circuit
must
be
adjusted
for
the
ASA
number
of
the
film
used.
This
is
done
by
means
of
a
slotted
index
pointer
located
on
the
bottom
of
the
shutter-speed
ring.
The
ASA
film-speed
scale
has
numbered
settings
for
speeds
from
ASA
12-
1600
with
dots
between
each
pair
of
numbers
for
intermediate
settings
such
as
ASA
64,
80,
etc.
Pull
up
the
ASA
lock
on
top
of
the
shutter-speed
lever
and,
while
holding
the
lock
up,
slide
the
slotted
ASA
index
pointer
until
it
lines
up
with
the
ASA
number
of
the
film
in
use.
After
releasing
the
ASA
lock,
check
that
the
ASA
index
pointer
is
securely
locked
into
position.
Film-Speed
(ASA)
Scale
16
20
32
40 64
80
125 160
250
320
500
640
e e
12
25
50
100
200
400
800
1600

EXPOSURE
CONTROLS
The
amount
of
exposure
the
film
receives
is
determin-
ed
by
a
combination
of
shutter
speed
and
aperture.
The
larger
the
lens
aperture,
the
more
exposure.
Like-
wise,
the
slower
the
shutter
speed
the
greater
the
exposure,
Aperture
is
expressed
in
f/numbers
with
larger
numbers
representing
smaller
apertures
and
vice
versa.
For
example,
f/8
gives
twice
as
much
exposure
as
f/11.
Shutter
speed
is
expressed
in
seconds
or
fractions
of
a
second.
The
numbers
on
the
Nikkormat
shutter-speed
scale
are
reciprocals
of
the
actual
speeds
(250
represents
1/250
second,
etc.).
Camera
aperture
and
shutter-speed
controls
are
cal-
culated
so
that
an
increase
of
one
f/number
com-
pensates
for
a
one-step
decrease
in
shutter
speed.
For
example,
1/250
at
£/8
is
equivalent
to
1/125
at
£/11.
The
table
below
shows
how
aperture
and
shutter-
speed
are
interrelated.
All
the
combinations
give
the
same
exposure.
Aperture
Shutter
speed
(seconds)
ate

Setting
the
Shutter
Speed
Shutter
speeds
are
controlled
by
a
ring
around
the
base
of
the
bayonet
mount
rather
than
the
usual
dial
on
top
of
the
camera
body.
To
set
the
shutter
speed,
grasp
the
lever
and
turn
the
ring
until
the
desired
speed
appears
next
to
the
indicator
dot
on
the
front
of
the
camera
body.
For
added
convenience
when
measuring
exposure,
the
shutter
speed
in
use
as
well
as
the
next
highest
and
lowest
speeds
appear
in
the
bottom
of
the
viewfinder,
so
the
shutter
speed
can
be
adjusted
while
observing
the
exposure
meter
needle.
Click-stopped
settings
for
shutter
speeds
from
1/1000
to
1
second
plus
“B”
are
engraved
on
the
shutter-
speed
ring.
At
the
‘“‘B”
(bulb)
setting,
the
shutter
remains
open
as
long
as
the
shutter
release
button
is
depressed.
Note:
Intermediate
shutter-speed
settings
are
not
recom-
mended
except
in
the
1/250
to
1/1000
second
range.
Setting
the
Aperture
To
preset
lens
aperture,
turn
the
aperture
ring
on
the
lens
barrel
until
the
desired
f/number
appears
opposite
the
black
indicator
dot
on
top
of
the
milled
ring.
The
aperture
diaphragm
can
be
set
for
intermediate
open-
ings
between
the
click-stopped
settings
for
more
precise
exposure.
re)
0

12
EXPOSURE
MEASUREMENT
The
Nikkormat
FT2
features
a
center-weighted
thru-
the-lens
exposure
metering
system
cross-coupled
to
the
shutter
speed
and
aperture
controls.
The
meter
reads
the
light
over
the
entire
focusing
screen
but
favors
a
central
area.
This
means
that
correct
ex-
posures
are
possible
even
in
situations
where
an
averaged
reading
would
result
in
wrong
exposure—
with
strong
backlighting,
for
example.
Full-Aperture
Exposure
Measurement
The
FT2
meter
takes
advantage
of
automatic
dia-
phragm
feature
of
Nikkor
Auto
Lenses
to
measure
light
at
the
maximum
aperture
of
the
lens.
This
insures
a
bright
viewfinder
image
for
viewing
and
focusing
and
minimizes
the
influence
of
light
entering
through
the
finder
eyepiece.
In
order
for
the
FT2
meter
to
measure
exposure
at
full
aperture
with
lenses
of
different
maximum
aper-
ture,
it
must
be
coupled
with
the
maximum
aperture
of
the
lens
in
use.
This
is
done
each
time
the
lens
is
attached
or
changed
by
turning
the
aperture
ring
of
the
lens
through
its
entire
range
(see
‘‘Changing
the
Lens,”
p.22.).
Turning
On
the
Meter
To
switch
on
the
Nikkormat
FT2’s
CdS
exposure
metering
circuit,
pull
out
the
film
advance
lever
just
enough
to
uncover
the
red
dot
on
top
of
the
camera
body.
When
the
meter
is
not
in
use,
press
the
lever
flush
against
the
camera
body,
since
the
battery
is
being
drained
continuously
as
long
as
the
lever
is
in
the
“on”
position.
OFF
\
ON

A
number
of
different
shutter
speed-aperture
combina-
tions
will
usually
result
in
the
same
exposure.
The
“best”
one
depends
on
the
results
desired.
Use
fast
shutter
speeds
to
“freeze”?
motion
or
slow
ones
to
create
deliberate
blur.
Small
apertures
give
greater
depth
of
field,
large
ones
let
the
subject
stand
out
against
an
out-of-focus
background
(see
“Depth
of
Field,”
p.19.).
Centering
the
Needle
To
determine
correct
exposure,
adjust
the
aperture
and/or
shutter
speed
until
the
meter
needle
in
the
viewfinder
is
centered
(the
—
and
+
marks
let
you
know
whether
you
are
under-
or
overexposing).
A
second
meter
needle
is
conveniently
located
on
top
of
the
camera
for
use
with
the
camera
held
at
waist-
level
or
mounted
on
a
tripod.
For
fine
adjustments
of
less
than
one
f/number,
use
the
aperture
ring
as
it
per-
mits
reliable
intermediate
settings.
Under
extremely
low
light
conditions
the
meter
nee-
dle
may
center
at
the
“B”
setting
on
the
shutter
speed
dial.
If
so,
correct
exposure
time
is
2
seconds.
If
the
needle
moves
erratically
or
cannot
be
centered
even
after
all
possible
aperture-shutter
speed
com-
binations
have
been
tried,
then
the
light
is
too
bright
or
dim
for
the
meter’s
range.
Effective
range
(coupl-
ing
range)
varies
according
to
the
lens
and
film
speed
used.
For
example,
with
the
50mm
f/1.4
lens
and
a
film
speed
of
ASA
100,
it
extends
from
f/1.4
at
1/4
second
to
f/11
at
1/1000
second.
250
125
60

EXPOSURE
MEASUREMENT
Getting
the
Right
Exposure
The
central
part
of
the
focusing
screen
should
always
be
aimed
at
the
main
subject
when
centering
the
needle.
Otherwise
unimportant
bright
or
dark
areas
may
give
an
exposure
reading
which
is
too
high
or
too
low,
resulting
in
under-
or
overexposure.
If
an
off-center
composition
is
desired,
first
measure
the
light
striking
the
main
subject
and
set
the
aperture
and
shutter
speed
to
center
the
needle.
Then
move
the
camera
until
the
desired
composition
appears
in
the
viewfinder.
For
subjects
of
uniform
tonal
brightness,
a
reading
may
be
taken
from
any
part
of
the
subject.
However,
if
the
subject
is
contrasty
(sidelighted
portraits,
for
example),
measure
the
light
falling
on
the
most
impor-
tant
part
of
the
subject
in
which
detail
is
desired
in
the
final
picture.
For
landscapes
including
large
areas
of
sky,
tilt
the
camera
downward
during
measurement
or
fill
the
center
of
the
finder
with
the
main
subject
to
prevent
underexposure
of
the
main
subject
caused
by
the
bright
skylight.
Photos:
1,
Measuring
the
bright
area
in
the
center
of
the
screen
will
cause
underexposure
of
the
main
subject.
2.
For
correct
exposure,
first
measure
the
light
striking
the
:
main
subject,
then
compose
and
shoot.
125
60
30
Picture
area

HOW
TO
HOLD
THE
CAMERA
Steady
camera
holding
is
important
for
best
results,
since
even
the
slightest
camera
movement
at
the
moment
of
exposure
can
result
in
an
appreciable
loss
of
sharpness,
especially
at
slow
shutter
speeds.
The
photographs
show
the
best
way
to
hold
the
camera
for
rock-steady
picture-taking.
Wrap
the
fingers
of
the
right
hand
around
the
camera
body
so
that
the
index
finger
rests
comfortably
on
the
shutter
release
button
and
the
thumb
fits
between
the
body
and
film
advance
lever.
This
way
you
can
stroke
the
film-advance
without
removing
your
eye
from
the
viewfinder.
Cradle
the
camera
in
the
left
hand
for
additional
support,
with
the
left
thumb
and
index
finger
grasping
the
focusing
ring.
The
camera
may
be
switched
from
horizontal
to
vertical
format
in
this
position.

16
FOCUSING
Focusing
is
always
done
at
full
aperture
with
Auto
Nikkor
lenses.
This
gives
the
brightest
possible
image
on
the
focusing
screen
for
easy
viewing
and
compos-
ing.
It
also
minimizes
depth
of
field
so
the
image
snaps
in
and
out
of
focus
distinctly.
The
Nikkormat
FT2
focusing
screen
consists
of
a
matte
Fresnel
field
with
a
central
3mm@
split-image
rangefinder
spot
surrounded
by
a
doughnut-shaped
1mm-wide
microprism
for
rapid,
accurate
focusing.
Look
through
the
viewfinder
and
turn
the
focusing
ring
until
the
two
halves
of
the
central
rangefinder
image
coincide
to
form
a
single,
sharp
image,
or
until
the
image
in
the
microprism
appears
sharp
and
crisp.
This
focusing
screen
is
suitable
for
subjects
with
both
straight
lines
and
ill-defined
contours.
However,
when
used
with
lenses
having
a
maximum
aperture
smaller
than
f/4.5,
or
in
close-up
photography,
the
rangefinder
spot
is
likely
to
darken.
In
this
case,
focus
on
the
surrounding
matte
field.
The
lens
can
also
be
prefocused
using
the
distance
scale
engraved
in
both
feet
and
meters
on
the
lens
barrel.
Line
up
the
white
indicator
line
on
top
of
the
lens
barrel
opposite
the
camera-to-subject
distance
as
measured
or
estimated.
This
technique
is
useful
for
candid
shots
of
elusive
subjects
when
time
does
not
permit
through-the-lens
focusing.
Microprism/split-image
screen

Out
of
focus
In
focus
Shutter
Release
For
sharp
pictures,
correct
shutter
releasing
is
just
as
important
as
steady
camera
holding.
A
quick,
jabbing
movement
of
the
finger
on
the
shutter
release
button
will
result
-in
camera
movement
and
blurred
pictures.
Hold
the
camera
steady
as
shown
previously,
relax
and
squeeze
the
shutter
release
with
a
gentle,
even
pressure.
For
long
time
exposures
with
the
camera
mounted
on
a
tripod,
use
a
cable
release.
The
shutter
release
button
is
threaded
to
accept
the
Nikon
F
and
Nikkormat
cable
releases.
For
hand-held
exposures
at
speeds
slower
than
1/30
second,
greater
sharpness
can
be
obtained
if
the
shutter
release
is
tripped
by
means
of
the
self-timer.
Set
the
self-timer
mechanism
in
motion
(see
‘“<Self-timer,”
p.24.),
hold
the
camera
steady
and
wait
for
the
timer
to
trip
the
shutter.
Caution:
When
mounting
the
camera
on
a
tripod,
do
not
over-screw
the
tripod
thread
into
the
camera
tripod
socket
as
it
may
damage
the
camera
baseplate.

FLASH
SYNCHRONIZATION
The
Nikkormat
FT2
features
an
accessory
shoe
with
built-in
hot-shoe
contact
and
automatic
MX
switch-
over
via
shutter
speed
selection
to
facilitate
the
use
of
various
light
sources.
Consult
the
table
below
to
find
out
which
shutter
speeds
are
acceptable
for
different
types
of
flashbulbs.
[i
Synchronized
[Cannot
be
used
Either
a
bulb-
or
electronic-type
flash
unit
slides
over
the
accessory
shoe
on
top
of
the
pentaprism
housing.
Due
to
the
built-in
hot-hoe
contact,
the
need
for
a
synch
cord
is
eliminated
for
units
with
a
hot
shoe.
For
units
without
a
hot
shoe,
use
a
synch
cord
and
connect
the
threaded
synch
terminal
on
the
camera
body
to
the
synch
socket
on
the
flash
unit.
To
prevent
accidental
electrical
shock,
the
safety
switch
in
the
accessory
shoe
turns
on
only
when
the
flash
unit
is
in
place.
Nikon
speedlight
units
SB-3
and
SB-4
can
be
directly
attached
to
the
Nikkormat
FT2.
For
mounting
the
Nikon
speedlight
unit
SB-2
or
flash
unit
BC-7,
use
of
the
flash
unit
coupler
AS-2
is
necessary.
For
details,
refer
to
the
instruction
manual
provided
with
each
unit.
Note:
Nikon
speedlight
units
SB-2,
SB-3
and
SB-4
are
not
available
in
North
America.
Caution:
Flash
units
without
a
hot
shoe
may
fire
accidentally
when
being
slipped
into
place
or
when
a
flashbulb
is
inserted.
Although
not
recommended,
accidental
firing
may
be
prevent-
ed
by
covering
the
hot-shoe
contact
on
the
camera
body
with
electrical
tape.

DEPTH
OF
FIELD
Depth
of
field
refers
to
a
zone
extending
in
front
of
and
behind
the
plane
of
sharpest
focus.
Within
this
zone
blur
(or
unsharpness
of
the
image)
will
be
negligible
and
everything
can
be
accepted
as
in
sharp
focus.
Depth
of
field
extends
a
greater
distance
behind
the
subject
in
focus
than
in
front.
Depth
of
field
depends
on
three
factors:
focal
length
of
the
lens,
lens-to-subject
distance
and
taking
aperture.
The
smaller
the
aperture
and
the
shorter
the
focal
length
of
the
lens,
the
greater
the
depth
of
field
(for
example,
wideangle
lenses
have
more
depth
of
field
than
tele-
photos).
Also,
the
closer
the
subject,
the
smaller
the
depth
of
field.
These
three
factors
can
be
adjusted
independently
or
in
combination
to
give
the
photo-
gtapher
creative
control
over
the
final
picture.
Depth-of-Field
Preview
Button
The
depth-of-field
preview
button
located
on
top
of
the
Nikkormat
lets
you
check
depth
of
field
before
shooting
and
make
desired
adjustments.
Press
the
button
and
the
lens
stops
down
to
the
preselected
aperture
to
allow
you
to
see
how
much
background
or
foreground
is
in
or
out
of
focus.

DEPTH
OF
FIELD
Depth-of-Field
Scale
Depth
of
field
can
be
read
from
the
color-coded
scale
engraved
on
the
lens
barrel.
The
pairs
of
colored
lines
correspond
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
example,
f/16
on
the
aperture
ring
of
the
50mra
f/1.4
lens
is
blue.
With
the
lens
prefocused
at
15
feet
(4.5m),
the
numbers
on
the
distance
scale
opposite
the
blue
lines
show
that
depth
of
field
extends
from
8
feet
(2.4m)
to
infinity
().
20
By
stopping
down
the
lens
only,
the
depth
of
field
can
be
increased,
as
illustrated
by
the
following
three
photographs:
1.
Lens
at
f/4.
Small
depth
of
field
with
only
main
subject
in
focus.
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