Nikon Action EX 10×50

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Objective diameter:  50 mm
Magnification:  10x
Exit pupil: 5 mm
Eye relief (acc. to spec): 17 mm
Usable eye relief (measured from rim of eyecup): 13 mm
IPD: 56  – 72 mm
RFOV:  6.5  degrees = 114 m
AVOV (measured, rounded): 59 degrees
Minimum focus distance (measured): 6.3 m
Focus type: CF (direction of rotation from close to infinity: > clockwise)
Degrees of rotation of focus wheel from 6.3 m to infinity (measured): 355 degrees
Range of diopter adjustment (estimate): +/- 3 dpt*
Excess travel of focus wheel beyond infinity position (estimate): 6 dpt*
Prism system:  Porro I
Waterproof: yes
Weight (measured, with eyepiece cover and strap): 1‘060 g
Made in: China
*range of diopter adjustment not affected by position of focus wheel



The Nikon Action EX series is a line of lower middle class porro binoculars with models in sizes 7×35, 7×50, 8×40, 12×50, and 16×50. They provide a very satisfactory performance for a relatively low price. BINOCULARS TODAY tends to recommend them to people who are looking for binolars with a decent performance, but who don’t want to spend much for them (Nikon’s Aculon series – see separate post “Nikon Aculon A211 7×35”,×35/ – would be even cheaper, but is mechanically and optically inferior to the Action EX). The 10×50 and 7×35 models are the most popular of the series.

see separate posts:
Nikon Action EX 7×35,×35-cf/
Nikon Action EX 8×40,×40-cf/
Nikon Action EX 16×50,×50/




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