Fujinon KF 10x25 specs and field of view

Weight is the story of the KF 10x25, at 13.4 oz with a 294 ft field at 1,000 yd. That field places 16th of 26 models of its size.

Field of view: 294 ftat 1,000 yd
Eye relief: 15 mm
Weight: 13.4 oz
Exit pupil: 2.5 mmcalculated

KF 10x25: width of view at 1,000 yd, against the median of the 26 10x25 models.

Who the KF 10x25 suits

Pocket carry and day trips suit its 13.4 oz. Its 15 mm eye relief is level with the 14.6 mm median, and the 10x image reaches out farther than 8x.

At 13.4 oz it is heavier than the 11.1 oz median for the size, and the calculated exit pupil of 2.5 mm limits dusk use.

KF 10x25 or another model: the best binoculars by maker figures shows how the popular ones differ. KF 10x25 is one of 26 models in the 10x25 binoculars comparison.

KF 10x25 specifications

KF 10x25 figures as Fujinon prints them; rows marked * are calculated from the 10x25 size.

KF 10x25 specifications
Magnification	10x
Objective lens	25 mm
Field of view	294 ft at 1,000 yd (98 m at 1,000 m)
Angular field of view	5.6°
Apparent field of view	56° *
Eye relief	15 mm
Weight	13.4 oz (380 g)
Exit pupil	2.5 mm *
Twilight factor	15.8 *
Relative brightness	6.3 *

* Calculated from the size, not printed by the maker.

KF 10x25 against other 10x25 binoculars

KF 10x25 shows 294 ft at 1,000 yd, below the 297 ft median of the 26 10x25 models in the chart. At 13.4 oz it is heavier than the 11.1 oz median for the size.

Opticron Imagic HD X-Wide 10x25378 ft
Hawke Frontier ED X 10x25347 ft
Nikon Trailblazer 10x25 ATB342 ft
Nikon Trailblazer II 10x25342 ft
Celestron Outland X 10x25326 ft
Bushnell H2O 10x25 Compact320 ft
ZEISS Victory Pocket 10x25315 ft
Bushnell A1 10x25315 ft
Minox X-active 10x25315 ft
Maven B.7 10x25314 ft
Bushnell PowerView 2 10x25 Compact300 ft
Fujinon KF 10x25294 ft

10x25 binoculars by field of view at 1,000 yd, widest first, from the makers' figures.

KF 10x25 and its nearest rivals

KF 10x25 next to the 10x25 models closest to it in maker list price, with the best figure in each column in bold.

Model	Field of view	Eye relief	Close focus	Weight	Exit pupil
Fujinon KF 10x25	294 ft	15 mm		13.4 oz	2.5 mm
Bushnell PowerView 2 10x25 Compact	300 ft	10 mm	15 ft	9.2 oz	2.5 mm
Bushnell H2O 10x25 Compact	320 ft	10 mm	17 ft	10.7 oz	2.5 mm
ZEISS Victory Pocket 10x25	315 ft	16.5 mm	6.2 ft	10.2 oz	2.5 mm

Other sizes of the KF

Fujinon makes the KF in 6 sizes; a larger front lens adds brightness and weight, and more magnification narrows the view.

Model	Size	Field of view	Eye relief	Weight	Exit pupil	Amazon
Fujinon KF 10x25	10x25	294 ft	15 mm	13.4 oz	2.5 mm
Fujinon KF 8x25	8x25	351 ft	15 mm	13.4 oz	3.1 mm
Fujinon KF 8x32	8x32	396 ft	14.5 mm	19 oz	4 mm	Check price on Amazon
Fujinon KF 10x32	10x32	341 ft	14.5 mm	19.8 oz	3.2 mm	Check price on Amazon
Fujinon KF 8x42	8x42	393 ft	15 mm	23.6 oz	5.3 mm
Fujinon KF 10x42	10x42	315 ft	13 mm	23.6 oz	4.2 mm

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KF 10x25 questions

KF 10x25: does it work with glasses?

KF 10x25 has 15 mm of eye relief, under the 16 mm the RSPB advises for people who wear glasses, so the edge of the view may be cut off with glasses on.

KF 10x25: what does 10x25 mean?

KF 10x25 magnifies 10 times through 25 mm front lenses, which works out to an exit pupil of 2.5 mm, the width of the beam of light that reaches each eye.

KF 10x25: how wide is the view?

KF 10x25 shows a view 294 ft wide at 1,000 yd, below the 297 ft median of the 26 10x25 models in the chart.