Swarovski ATX/STX/BTX 85mm Objective Lens Module (Eyepiece Module Required)

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Swarovski Optik ATX/STX/BTX 85mm Objective Lens Module with its brilliant low-light performances can be a perfect choice for any nature enthusiasts who strive for an outstanding experience!

Swarovski Optik ATX/STX/BTX 85 mm Objective Lens Module can be ideal for birders, hunters, and nature lovers who are willing to have an impressive interaction with the environment. Swarovski ensures the perfection of their optics through the combination of modularity and exceptional flexibility. This mid-sized version of the objective lens module comes with an updated tripod shoe compatible with Arca-Swiss quick release plates. The module requires separate eyepiece modules. It is compatible with the three eyepiece modules, namely straight (STX), angled-viewing (ATX), and binocular viewer (BTX). A backward compatible bayonet mount facilitates an easy up-gradation of the objectives without a new eyepiece module. The bayonet mount works with the original ATX/STX modules.

Our Take on the Swarovski Optik ATX/STX/BTX 85mm Objective Lens Module:

The Swarovski Optik ATX/STX/BTX Module possesses an objective lens diameter of 85mm. The lens holds a nice balance between portability and aperture. A larger objective lens compared to the 65mm model increases the light drawing capacity and produces a larger exit pupil. It imparts an improved low-light performance to the lens that makes it an ideal choice from dawn to dusk. The lens provides a wide field of view that enables a fast and precise observation. An excellent zoom range and close-focusing features make it a perfect tool for digiscoping as well. A field-flattener lens system counters the field angle dependence of the focal length system by rejecting spherical aberrations. It eliminates any possible distortions of the image at the edges of the frame.

Swarovski Optik ATX/STX/BTX 85 mm Objective Lens Module’s fluoride HD glass elements with extra-low dispersion quality minimize chromatic aberrations by transmitting all the wavelengths of the visible light spectrum. It generates a more detailed and sharper view with minimal color fringe. The legendary Swarovski coatings further enhance image quality. The SWAROTOP anti-reflective lens coating ensures minimal glare effects. It improves the contrast, clarity, and color rendition of the image. A SWARODUR coating helps keep the exterior lens surface scratch-free, and the SWAROCLEAN non-stick coating applied to the external surfaces of lenses and prisms prevents dust accumulation. It also makes the cleaning process more efficient.

Complementing the Swarovski Optik ATX/STX/BTX 85 mm Objective Lens Module’s outstanding optical functions is a low weight that makes it easy to carry. The chassis made of magnesium alloy combines with rubber armor to ensure the optics' safety by withstanding impacts effectively. The armor also enables ergonomic and secured handling with its slip-resistant grip. The optic incorporates nitrogen-filled and O-ring sealed optical tubes that ensure that the product remains dustproof and waterproof. There is no internal fogging when the device moves between extreme weather conditions, and it functions within the temperature range from -13 to 131°F. The large focusing collar is easily manipulative even with gloves on. And the tripod collar shoe bottom has a 1/4"-20 socket. The rotating tripod mount ensures precise eyepiece placement.


Objective Lens Diameter: 85mm
Minimum Focus Distance: 11.8' / 3.6 m
Operating Temperature range: -13 to 131°F
Filter Thread: M87 x 0.75
Tripod Mounting Thread: 1/4"-20
Fog-proof: Yes, Nitrogen filled
Water Resistance: Waterproof
Material: Aluminum Alloy
Focus System: Center

Included in the box:

  • Swarovski BTX /STX/ ATX 85mm Objective Lens Module (Eyepiece Module Required)
  • Objective Lens Cap
  • Rear Bayonet Mount Cap

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Swarovski ATX/STX/BTX 85mm Objective Lens Module (Eyepiece Module Required)