Angle of View Changes by Interchanging Lenses
. l
Lens Comparison Chart
Lens
50mm
I I I
127mm f/4.7
The picture angle marked with an asterisk ( * ) is that when photographing through the
Polaroid film pack format 100 or 660 series.
The black type lens has a black-finished lens barrel scale ring.
The chromium type lens has a chromium-plated shutter speed dial.
Lens con-
1
struction
5-group
f/6.3
,
8-element
Angie of view
/
6 x
9cm
/
6 x
/
Minimum Shutter Filter
7cm 1 aperture / type / size
Black 7
I I I
II
lack
~
Black 55mm
64
2mm Clamp-on ; Time lock
/ 72mm
le
~-
Clamp-on
~
Screw-in Press focus
/
The lenses combine Mamiya Sekor lenses,
boasting high resolving power and beautiful
color balance, incorporating the famed Seiko
I
I
77
#0 shutter.
All lenses have an M-X synchro terminal.
By selecting this terminal, both M-class flash
bulbs and electronic flash can be synchronized at all shutter speeds.
The 250mm f/5 lens interlocks with the
rangefinder from 20ft (7m) to infinity. When
photographing at a short distance, focus by
directly observing the ground glass focusing
screen or by setting the lens distance scale
to the actually measured distance (by tape
measure) or the distance measured visually.
Regarding the black type and the chromium type lens, the 100 mm f/3.5 and 150 mm
f/5.6 lenses have different filter sizes and
hood attachment sizes. When purchasing
filters, clearly indicate the filter diameter;
when purchasing hoods, clearly designate
the type of lens and its focal length.
4646
Shutter Operation
(For
100mm
f/3.5 and 127mm f/4.7 lenses, see Page 16.)
Cable Release: Screw the cable release
into the cable release socket (1).
Shutter speed: Rotate the shutter speed
ring (2) until the desired shutter speed scale
is aligned with the index mark.
Cocking: Press the shutter cocking lever
(3) in the direction shown in the photo until it
stops. When removing the finger, the lever
returns to its original position,
Tripping: Press the shutter release trigger
of the hand grip or push in the shutter release
button (4).
T Setting: To keep the shutter open for
focusing on the focusing screen, by setting
the shutter speed to “B”, cocking the shutter,
pushing the shutter release button (4)and ro-
tating it clockwise, the shutter will remain
open. To close the shutter, rotate the shutter
release button counterclockwise, removing
the finger from it
.
47
Cable Release: Screw the cable release
into the cable release socket (1).
Shutter Speed: Rotate the shutter speed
ring (2) until the desired shutter speed scale
is aligned with the index mark.
Cocking : Press the shutter cocking lever
(3) in the direction indicated in the photo
until it stops.
Tripping : Press the shutter release trigger
or move the shutter release lever (4) in the
direction indicated in the photo,
Press Focus: When focusing by the focusing screen, by cocking the shutter (regardless
of shutter speed) and pulling out the press
focus lever (5), the shutter will remain open.
To close the shutter, return the press focus
lever (5) to its original position. It is not
necessary to recock the shutter.
4848
Cable Release: Screw the cable release
into the release socket of the shutter button
(1).
Shutter Speed: Rotate the shutter speed
ring (2) until the desired shutter speed scale
is aligned with the index mark.
Cocking: Press the shutter cocking lever
(3) in the direction indicated in the photo
until it stops. When removing the finger, the
lever returns to its original position.
Tripping: Press the shutter release trigger
of the cable release. When the cable release
is not attached, press the shutter button (1).
T Setting: When focusing by the focusing
screen, by setting the shutter speed to “B”,
cocking the shutter, and moving the time
lever(5) in the direction indicated in the photo
until it stops, the shutter will remain open. To
close the shutter, return the time lever (5) to
its original position. The time lever will not
move when the shutter speed is not set on
"B”.
The shutter speed ring (2) will not turn
when the shutter is kept open by using time
“T” operation.
Do not move the shutter cocking lever (3)
while the shutter is kept open.
Depth Of Field Table
5Omm
f/6.3 75mm f/5.6
(Distance
in
feet)
113’ 8’I
9’6%‘1 7’
334334
5'11"
I
5' 2½"
9wl
3wl
I
'
4
9wr3GrL
4'
3'
1OOmm
f/3,5
h
100mm
f/2.8
150mm
f/5.6
127mm
f/4.7
81’ s/4
33' 7½" I 16' 2½" I
21' 5¼"
10' 8"
I 7' 11½" /
12'
4¼" 9' 4½"
6'
250mm f/5 and 250mm f/8
a) 50 30/20/15/12 10
The minimum aperture of 250mm f/5 lens is 45; figures in the red frame indicate
50 that for the 250mm f/8 lens.
B’%”
7' 11¾"
6’
5
1
Depth of Field Table (Distance in meter)
1 6.3 ;
./,
:
1.01
r>
71
0.
Y
-
50mm f/6.3
~ 9. 90 5.85 3.62 2.71 12.22
.56
3.43 2.65 2.08
75mm
1 7.04 1 4.19 / 2.98 ~ 2.15 1 1.60 1 1.27 1 1.05 1 0
I
^
f/5.6
0 M
n f/3.5
r
-
Y
1.5
44
1
57
1.43
1 56
7.47 3.00
12 1.0
---I-
1. 16
.63
0
98
16
cc m
21.81
5.38 2.77
1.67
100mm f/2.8
32
150mm
f/5.6
c
J‘
----
45
5:*
m
15.09
1
,::;,”
I
---r---z
4.81
3.59 2.60
::f
127mm
f/4.7
52
250mm
f/5
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