Delta Optical Extreme 10x50 ED Binoculars

Zero-angle binoculars with constant magnification of 10x and objective diameter of 50mm from the Extreme series featuring a solid construction. Multi-coated optics combined with a solid objective lens provide plenty of light and vivid and clear images. Thus, the binoculars can be used both during the day and after dark.


The body of the binoculars is made of durable metal and covered with a special rubber veneer, which, in addition to good grip, provides effective cushioning when the binoculars are dropped or bumped. The mechanics in the Extreme model can operate in a wide temperature range from -40 to 70 degrees Celsius.

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An important feature Extreme is also full waterproofness and protection against fogging from the inside, in the form of pure nitrogen, with which the binoculars are filled. 

Comfortable eyecups fit snugly around the eye sockets, cutting off light coming from outside. Thanks to its large size, the binoculars can be operated with gloves. Combined with the large exit pupil distance of the eyepieces, this ensures comfortable observation.


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The binoculars use porroprismatic design and use low dispersion elements, and the prisms are made of high-quality glass BaK-4. All optical elements have been covered with anti-glare coatings (FMC). This guarantees over 90% light transmission throughout the system. The image is free from defects such as astigmatism or coma, and is perfectly flat thanks to proper distortion correction.


All Delta Optical Extreme models have a separate external focusing system for each eyepiece.


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The kit includes:
- 1/4 inch tripod adapter,
. - binocular case,
- binoculars case,
- strap for case,
. - binocular strap,
- lens caps,
- eyepiece lids,
- optics cleaning cloth.

Lens diameter: 50 mm
Magnification: 10x
Angular field of view: 6.5 degrees
Linear field of view: 114 m/1000 m
Exit pupil: 5 mm
Pupil distance: 18.5 mm
Minimum focus: 6 m
Twilight efficiency: 22.36
Relative brightness: 25
Prisms: BaK-4/Porro
Waterproof: Yes
Nitrogen filling: Yes
Tripod output: Yes
Focusing: Individual
Dimensions: 186x215 mm
Weight: 1600 g
Manufacturer: Delta Optical, Poland