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Technical data
Magnification
Front lens diameter
Exit pupil
Field of view
Eye relief
Close distance
Over run (∞)
Diopter adjustment
Twilight factor
Geom. Twilight no.
Operating temperature
Waterproof
Height x Width x Depth
Weight approx.
BF 8x42
8 x
1.65 inch / 42.0 mm
0.21 inch / 5.25 mm
389 ft at 1,000 yds 7.4°
129 m at 1,000 m 7.4°
0.71 inch / 18.0 mm
3.94 ft / 1.2 m
4 dpt
±4 dpt
18.3
27.6
14° up to 122° F
-10° up to +50° C
yes, down to 9.84 ft / 3.0 m
5.5 x 5.0 x 2.0 inch
140 x 127 x 51 mm
27.5 oz / 780 g
20
BF 10x42
10 x
1,65 inch / 42.0 mm
0.17 inch / 4.2 mm
342 ft at 1,000 yds 6.5°
114 m at 1,000 m 6.5°
0.60 inch / 15.0 mm
3.94 ft / 1.2 m
4 dpt
± 4 dpt
20.5
17.6
14° up to 122° F
-10° up to +50° C
yes, down to 9.84 ft / 3.0 m
5.5 x 5.0 x 2.0 inch
140 x 127 x 51 mm
27.5 oz / 780 g