inf
6
4.22 - 6.15
4.06 - 6.52
3.76 - 7.50
3.44 - 9.25
3.02 - 15.16
2.63 -
66.77
4
3.49 - 4.69
3.38 - 4.90
3.17 - 5.43
2.94 - 6.28
2.63 - 8.51
2.34 -
14.89
3
2.70 - 3.37
2.64 - 3.47
2.52 - 3.72
2.37 - 4.09
2.17 - 4.91
1.97 -
6.49
2.5
2.30 - 2.74
2.25 - 2.81
2.16 - 2.97
2.06 - 3.20
1.90 - 3.67
1.75 -
4.47
2
1.87 - 2.15
1.84 - 2.19
1.79 - 2.28
1.71 - 2.41
1.61 - 2.66
1.50 -
3.05
1.7
1.61 - 1.80
1.59 - 1.83
1.54 - 1.90
1.49 - 1.98
1.41 - 2.14
1.33 -
2.38
1.5
1.43 - 1.58
1.41 - 1.60
1.38 - 1.65
1.34 - 1.71
1.27 - 1.83
1.21 -
1.99
1.3
1.25 - 1.36
1.23 - 1.37
1.21 - 1.41
1.18 - 1.45
1.13 - 1.53
1.07 -
1.64
The diaphragm serves for the control of light opening diameter. The
stopping down is performed by moving the lever (20) [Fig.4] with pointer
(2) [Fig.2]. The lens is stopped down when increase of the depth of field is
desirable or when the available light is too intensive. Photographic lens
depths of fields with different diaphragms and distances are given in the
table.
Summary of Contents for Lubitel 166
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