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Lightweight, compact, and ergonomic, these 8x40 SFL Binoculars combine ease of use with the premium optical quality ZEISS is known for. The SFL (SmartFocus Lightweight) line uses slightly smaller objective lenses for a significant weight reduction from previous models, making a day of nature observation or sightseeing much more comfortable. You'll enjoy the generous field of view for the big picture and the 5' close-focus distance for a good look at that nearby bird or butterfly. Schott HT glass with the famous T* ("T star") coating delivers 90% light transmission for a beautiful image, even in the low light of dusk or dawn. The SFL is nitrogen-filled to prevent internal fogging and is waterproof to a depth of nearly 14'.

Prism Type - Roof
Performance
Magnification - 8x
Objective Lens Diameter - 40 mm
Angle of View - 60° (Apparent)
Field of View - 420' @ 1000 yd / 139.4 m @ 1000 m
Minimum Focus Distance - 5' / 1.5 m
Exit Pupil Diameter - 5 mm
Eye Relief - 18 mm
Interpupillary Adjustment - 52 to 74 mm / 2 to 2.9"
Diopter Adjustment - -4 to +4
Focus Type - Center
Features
Fogproof - Yes, Nitrogen Filled
Water Resistance - Waterproof
Environmental Protection - Advertised as Water Resistant
                                      *Test Methodology Not Supplied
General
Dimensions - Length: 5.7" / 14.5 cm
Weight - 22.6 oz / 641 g