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Nikon Prostaff 5 12x50 specs and field of view

Twelve times magnification meets 50 mm lenses in the Prostaff 5 series, with a 4.2 mm calculated exit pupil and a 246 ft field at 1,000 yd.

Field of view
246 ftat 1,000 yd
Eye relief
15.5 mm
Close focus
16.4 ft
Weight
27.9 oz
Exit pupil
4.2 mmcalculated

Why pick it

  • 27.9 oz, lighter than the typical 29.2 oz
  • Waterproof
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Prostaff 5 12x50: width of view at 1,000 yd, against the median of the 36 12x50 models.
Prostaff 5 12x50: width of view at 1,000 yd, against the median of the 36 12x50 models.

Who the Prostaff 5 12x50 suits

The 15.5 mm eye relief and 4.2 mm calculated exit pupil suit steady, longer looks at distant animals or landscapes when you can brace the glasses. Nitrogen fogproofing and a 1 m rating for 10 minutes cover damp days.

The view of 246 ft is narrow against the 277 ft median for 12x50, and close focus of 16.4 ft is long.

Prostaff 5 12x50 aside, the most popular models of all sizes are in our best binoculars comparison. Prostaff 5 12x50 is one of 36 models in the 12x50 binoculars comparison. Nikon lists it in the $200 to $500 price band, alongside the models in best binoculars under $500.

Prostaff 5 12x50 specifications

Prostaff 5 12x50 figures as Nikon prints them; rows marked * are calculated from the 12x50 size.

Prostaff 5 12x50 specifications
Magnification12x
Objective lens50 mm
Prism typeRoof
Field of view246 ft at 1,000 yd (82 m at 1,000 m)
Angular field of view4.7°
Apparent field of view52.4°
Eye relief15.5 mm
Close focus16.4 ft (5 m)
Eye spacing range56 to 72 mm
Weight27.9 oz (790 g)
Length7.2 in (183 mm)
Width5.5 in (140 mm)
WaterproofingUp to 1 m / 3.3 ft for 10 minutes
Fog-proofing gasNitrogen
Focus systemCenter focus
Maker list price$200 to $500
Exit pupil4.2 mm *
Twilight factor24.5 *
Relative brightness17.4 *

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

Prostaff 5 12x50 against other 12x50 binoculars

Prostaff 5 12x50 shows 246 ft at 1,000 yd, below the 277 ft median of the 36 12x50 models in the chart. At 27.9 oz it is at or under the 29.2 oz median weight for the size.

12x50 binoculars by field of view at 1,000 yd, widest first, from the makers' figures.

Prostaff 5 12x50 and its nearest rivals

Prostaff 5 12x50 next to the 12x50 models closest to it in maker list price, with the best figure in each column in bold.

ModelField of viewEye reliefClose focusWeightExit pupilMaker list priceAmazon
Nikon Prostaff 5 12x50 246 ft 15.5 mm 16.4 ft 27.9 oz 4.2 mm $200 to $500 Check price on Amazon
Bushnell R5 12x50 275 ft 15 mm 30.6 oz 4.2 mm $200 to $500 Check price on Amazon
Hawke Vantage 12x50 263 ft 16 mm 8.2 ft 25.3 oz 4.2 mm $200 to $500
Leupold BX-2 Timberline HD 12x50 262 ft 15 mm 5 ft 26.6 oz 4.2 mm $200 to $500 Check price on Amazon

Other sizes of the Prostaff 5

Nikon makes the Prostaff 5 in 4 sizes; a larger front lens adds brightness and weight, and more magnification narrows the view.

ModelSizeField of viewEye reliefClose focusWeightExit pupilAmazon
Nikon Prostaff 5 12x50 12x50 246 ft 15.5 mm 16.4 ft 27.9 oz 4.2 mm Check price on Amazon
Nikon Prostaff 5 8x42 8x42 330 ft 17.5 mm 16.4 ft 22.2 oz 5.3 mm
Nikon Prostaff 5 10x42 10x42 294 ft 15.2 mm 16.4 ft 22.2 oz 4.2 mm
Nikon Prostaff 5 10x50 10x50 293 ft 19.6 mm 16.4 ft 28.7 oz 5 mm Check price on Amazon

Nikon binoculars

Prostaff 5 12x50 questions

Prostaff 5 12x50: does it work with glasses?

Prostaff 5 12x50 has 15.5 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.

Prostaff 5 12x50: what does 12x50 mean?

Prostaff 5 12x50 magnifies 12 times through 50 mm front lenses, which works out to an exit pupil of 4.2 mm, the width of the beam of light that reaches each eye.

Prostaff 5 12x50: how wide is the view?

Prostaff 5 12x50 shows a view 246 ft wide at 1,000 yd, below the 277 ft median of the 36 12x50 models in the chart.