Nikon 5×15 DCF



Objective diameter:  15 mm
Magnification:  5 x
Exit pupil: 3 mm
Usable eye relief (measured from rim of eyecup): 13.5 mm
IPD:  56 – 71 mm
RFOV:  9.0  degrees = 157 m
AFOV (measured, rounded): 45 degrees
Minimum focus distance (measured): 0.95 m
Focus type:  CF (direction of rotation from close to infinity: > clockwise)
Degrees of rotation of focus wheel from 3 m to infinity (measured): 100 degrees
Range of diopter adjustment (estimate): +/- 2.5 dpt*
Excess travel of focus wheel beyond infinity position (estimate): 4.5 dpt*
Prism system:  Schmidt-Pechan
Waterproof: no
Weight (measured, with eyepiece cover and strap): 200 g
Made in: Japan
*range of diopter adjustment not affected by position of focus wheel



Tiny pocket binocular with 5x magnification. It ranges somewhere between Nikon’s even smaller 6×15 Mikron and the 4×10 DCF, but seems a bit expensive for its performance:  It is quite sharp at the center of the image, and the off-axis sharpness is actually amazingly good, but the image appears somewhat dark, and it has a slight pink tint.

(see separate posts:×15-cf/ and×10-dcf/)



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