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Delta Optical Extreme 15x70 ED binoculars

Catalog Number: DO-1603
In stock
Top advantages
  • ED optics – perfect correction of chromatic aberration
  • Fully flat field, wide angle optical system
  • Individual focus adjustment
  • Extremely rugged and durable
  • Suprisingly bright and high contrast of image in its class
Warranty: 60 months Details

Details

All the binoculars of the Extreme series are massive instruments with uncompromising optical solutions used. The best optical properties supported by solid mechanics were the priority for their design. Hence the porro prism construction and the presence of the low-dispersion optical elements and solid prisms made of high quality BaK-4 glass. Thanks to powerful prisms you do not have to worry about vignetting and darkening of the image at the edge of the field of view. In addition, Extreme binoculars use anti-reflection coatings (FMC), which cover all the optical elements. They provide more than 90 percent light transmission throughout the system. Bodies of all the Extreme binoculars models are made of durable metal and coated with a special rubber veneer. Of course the Extreme binoculars are water-proof. DO Extreme binoculars have individual focusing system.

Additional Information

    15.0000
  • Magnification [x]: 15
  • Objective lens diameter [mm]: 70
  • Optical coating: FMC
  • Objective lens material: ED glass
  • Twilight factor: 32.4
  • Relative brightness: 22.1
  • Exit pupil diameter [mm]: 4.7
  • Eye relief [mm]: 28
  • Interpupillary distance adjustment [mm]: 54 - 73
  • Angular field of view [° degrees]: 4.4
  • Linear field of view at 100 m [m]: 77
  • Shortest focusing distance [m]: 10
  • Dioptre adjustment [D]: -/+5
  • Prism system: Porro
  • Prism material: BaK4
  • Waterproof: Yes
  • Nitrogen filling: Yes
  • Tripod mounting: Adapter ¼"
  • Length x width x height [mm]: 290x228x87
  • Weight [g]: 2 220
  • Accessories: - aluminium case
    - strap
    - optics cleaning material
    - caps for apart lenses and eyepieces

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