against light as well as improves color rendition.
If an interchangeable lens has no automatic diaphragm, the diaphragm can be
handled manually. If a picture is taken with a long-focus lens, the left-hand and
right-hand edges of the frame will be slightly cut off.
With the help of a special stand the camera can be
used for making copies of drawings, manuscripts,
photographs. To do this use should be made of
extension tubes by setting them between the
camera body and the lens. To obtain the
magnification you want either one tube or a
combination of some tubes can be used.
Extension tubes provided with a control pin should
be used with lenses where no diaphragm manual
mode switch is provided ("HELIOS-44M-4" for
example).
Extension tubes without control pins should be used
with the lenses in which the aperture is set manually
(the diaphragm mode selector switch should be set
to "M".
Interchangeable Lenses
Lens name
focal length in
mm
relative
aperture
angle of field of
view
minimum focusing distance in
m
Mir-20M
MC Mir-20M
20
f/3.5
96°
0.18
Mir-10A
28
f/3
75°
0.20
MC Mir-24M
35
f/2
66°
0.30
MC Industar-61
50
f/2.8
45°
0.30
Helios-40-2
85
f/1.5
28°
0.80
Jupiter-9
MC Jupiter-9
85
f/2
28°
0.80
Tair-11A
135
f/2.8
18°
1.20
Jupiter-37A
MC Jupiter-37A
135
1/3.5
l8°
1.20
MC Granit -11M
80--200
f/4.5
30°--12°
1.50
Jupiter-21M
200
f/4
12°
1.80
3M-6A
(right: ZM -6A)
500
f/6.3
5°
6.0
MC MTO-11
CA
1000
f/10
2°30'
8.0