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compact 10x42 binoculars

compact 10x42 binoculars

POWER 10x OBJ.LENS DIA. 42mm TYPE OF PRISM BaK4 NUMBER OF LENS 8 pieces 6 groups LENS COATING FMC/Object lenseyepiece is FBMC FOCUS SYSTEM Cent. FOCUSING LENS Int. EXIT PUPIL DIAMETER 4 EXIT PUPIL DIST. 15.2 FIELD OF VIEW 5.8 MIN. FOCAL LEN...
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Description

POWER 10x
OBJ.LENS DIA. φ42mm
TYPE OF PRISM BaK4
NUMBER OF LENS 8 pieces 6 groups
LENS COATING FMC/Object lens&eyepiece is FBMC
FOCUS SYSTEM Cent.
FOCUSING LENS Int.
EXIT PUPIL DIAMETER φ4
EXIT PUPIL DIST. 15.2
FIELD OF VIEW 5.8°
MIN. FOCAL LENGTH 2m
RELATIVE BRIGHTNESS 18.23
TWILIGHT INDEX 20.4