Nikon Introduces New MONARCH X Binoculars

February 18, 2009

Nikon Vision Co., Ltd., a subsidiary of Nikon Corporation, is pleased to present the new MONARCH X binoculars, superior models in the globally popular MONARCH series. These new binoculars feature outstanding optical quality further enhanced by a large 45 mm objective diameter and innovative dielectric high-reflective multilayer prism coating.
The O-ring seals and nitrogen gas in the slim body make these binoculars waterproof and fog-free. Rubber coating protects the binocular body and assures a firm and conformable grip. The 8.5x and 10.5x MONARCH X binoculars are available for observing nature such as birds and other animals.

Key Features

Dielectric high-reflective multilayer prism coating assures uniform and high transmittance in full visible range for bright and natural color images
All lenses and prisms are multilayer-coated for the brightest images
Phase-correction-coated roof prisms for high resolution
Waterproof (up to 1 m/3.3 ft. for 10 minutes) and fog-free with O-ring seals and nitrogen gas
High-eyepoint design for 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

Nikon MONARCH X Binoculars Specifications

Swipe horizontally to view full table.

	MONARCH X 8.5x45 DCF	MONARCH X 10.5x45 DCF
Magnification	8.5x	10.5x
Objective diameter	45 mm	45 mm
Angular field of view (real)	6.3°	6.3°
Angular field of view (apparent)^*	50.1°	60.0°
Field of view at 1,000 m	110 m	110 m
Exit pupil	5.3 mm	4.3 mm
Relative brightness	28.1	18.5
Eye relief	20.6 mm	16.0 mm
Close focusing distance	3.0 m	3.0 m
Interpupillary distance adjustment	56-72 mm	56-72 mm
Length	156 mm	156 mm
Width	139 mm	139 mm
Weight	720 g	730 g

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