Nikon Introduces New PROSTAFF 7 Binoculars

June 1, 2011

Nikon Vision Co., Ltd., a subsidiary of Nikon Corporation, is pleased to present two new PROSTAFF 7 models, the 8x42 and 10x42. With fully multilayer-coated lenses and prisms, including phase-correction-coated roof prisms and high-reflection mirror coating prisms, the PROSTAFF 7 binoculars series offers a brighter image and higher resolution. The rubber armoring provides durability and a nonslip grip for comfortable holding.
Positioned between the Monarch and the Sporter EX series, these first PROSTAFF 7 series models deliver higher optical performance at an attractive price.

Key Features

All lenses and prisms are multilayer-coated to achieve brighter images.
Phase-correction-coated roof prisms deliver high resolution.
High-reflection mirror-coating prisms enhance image brightness.
High-eyepoint design provides a clear field of view, even for eyeglass wearers.
Turn-and-slide rubber eyecups with multi-click facilitate easy positioning of eyes at the correct eyepoint.
Waterproof up to 1 m/3.3 ft for 10 minutes and fog-free with nitrogen gas
Rubber armoring for shock resistance and a firm, comfortable grip
Eco-glass optics that are free of lead and arsenic are employed for all lenses and prisms

Nikon PROSTAFF 7 Binoculars Specifications

Swipe horizontally to view full table.

	PROSTAFF 7 8x42	PROSTAFF 7 10x42
Magnification	8×	10×
Objective diameter	42 mm	42 mm
Angular field of view (real)	6.3°	6.0°
Angular field of view (apparent)^*	47.5°	55.3°
Field of view at 1,000 m	110 m	105 m
Exit pupil	5.3 mm	4.2 mm
Relative brightness	28.1	17.6
Eye relief	19.3 mm	15.4 mm
Close focusing distance	4.0 m	4.0 m
Interpupillary distance adjustment	56-72 mm	56-72 mm
Length	175 mm	172 mm
Width	129 mm	129 mm
Weight	665 g	665 g

*Nikon has adopted a calculation method based on ISO 14132-1:2002.
tan ω' = Γ x tan ω
Apparent field of view: 2ω'
Real field of view: 2ω
Magnification: Γ