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Swarovski Optik 12×50 EL Series Water Proof Roof Prism Binocular with 5.7 Degree Angle of View, Green


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Swarovski Optik 15×56 SLC Series Water Proof Roof Prism Binocular with 4.5 Degree Angle of View, Black


About Swarovski Optik 15×56 SLC Roof Prism Binocular, 4.5 Degree Angle of View, Black

The Swarovski Optik SLC 15×56 Binocular combines extra-low dispersion (HD) glass elements and range of proprietary optical coatings with a weather-resistant magnesium alloy housing to create a multi-purpose set of glasses that deliver impressive image quality and durability. This configuration of the SLC displays an immersive 62deg. apparent viewing angle; a long 16mm eye relief and multi-position twist-up eyecups enable a comfortable viewing distance for almost any observer.

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The Swarovski uses an Abbe Koenig prism design for the 56mm SLC model, which maintains a streamlined form-factor without sacrificing image quality. The prisms are phase-corrected to enhance sharpness and reduce chromatic aberration. And each of the fluoride-containing HD glass elements is finished with multiple layers of SWAROTOP anti-reflective lens coating. Resulting images transmitted by the SLC optical path are rich with detail and saturated with lifelike color.

In addition to its high-transmission optical system, Swarovski also equips the SLC binocular with a range of features that improve the handling experience of the observer. The geared focus system offers quick and precise focusing with the same focus wheel, permitting the observer to focus from infinity down to 13′ in only two rotations. Covering the magnesium alloy housing are two distinct types of rubber armoring, each providing impact protection and tactile response where they are needed most.

Complementing the HD optics and improved ergonomics of the SLC series binoculars is a nitrogen-filled housing that is air-tight to a depth of 13 ft. Swarovski finishes the exposed lens surfaces with their SWARODUR scratch-resistant and anti-reflective coating, as well as SWAROCLEAN non-stick lens coating, which repels moisture and prevents residue from adhering to the exposed glass. Its premium optics and user-friendly performance make the SLC binocular a reliable optic for intermediate to long-range glassing tasks.


Swarovski Optik 15×56 SLC Roof Prism Binocular, 4.5 Degree Angle of View, Black Features

  • HD Optical System: fluorite-containing glass enhances color fidelity and brightness
  • SWAROBRIGHT highly reflective mirror prism coating optimizes color transmission
  • SWAROTOP anti-reflective lens coating reduces glare and improves contrast
  • Abbe-Koenig prism design, P-Coating phase-correction preserves sharpness and clarity
  • 62deg. wide apparent viewing angle
  • 13′ minimum focus distance
  • Twist-up eyecups with three click-stop positions
  • Mechanical focus system enables quick yet precise focusing
  • Center wheel diopter adjustment
  • 1/4″-20 threaded mount for tripod adapter
  • Nitrogen-filled for fogproof and waterproof performance
  • Magnesium alloy housing with dark green rubberized finish
  • Dual-texture rubber armoring enhances impact protection and ergonomics
  • SWAROCLEAN non-stick coating, SWARODUR scratch-resistant lens surfaces


Swarovski Optik 15×56 SLC Roof Prism Binocular, 4.5 Degree Angle of View, Black Specifications

Prism Type
Effective objective lens diameter
Exit pupil diameter
Exit pupil distance (eye relief)
Field of view (ft/1000 yds / m/1000 m)
Field of view
4.5 degrees
Field of view for eyeglass wearers
4.5 degrees
Field of view, apparent
62 (degrees)
Shortest focusing distance
Dioptric compensation
+/- 5 (dpt)
Diopter correction at infinity
8 (dpt)
Light transmission
93 %
Pupil distance
Twilight factor acc. to DIN 58388
Functional temperature
-13 deg.F to +131 deg.F (-25 deg.C / +55 deg.C)
Storage temperature
-22 deg.F to +158 deg.F (-30 deg.C / +70 deg.C)
Submersion tightness
13′ / 4m water depth (filled with nitrogen)
Dimensions (L x W x H)
7.56 x 5.5 x 2.87″ / 19.20 x 13.97 x 7.28cm
42.3 oz /1200g

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