Swarovski 8x42 SLC Binocular

Swarovski 8x42 SLC Binocular

Swarovski 8x42 SLC Binocular

B&H # SW8X42SLCWBB MFR # 58305
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Product Highlights

  • Fluorite-Containing HD Glass Elements
  • Roof Prisms with Phase Correction
  • Wide-Angle Viewing
  • Nitrogen Filled Fogproof/Waterproof
  • Open-Bridge Configuration
  • Magnesium-Alloy Housing, Rubber Armored
  • Mechanical Center Focus System
  • 18.5mm Eye Relief
  • Three-Position Twist-Up Eyecups
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Swarovski 58305 overview

  • 1Description

The 8x42 SLC Binocular from Swarovski combines extra-low dispersion (HD) glass elements and a range of proprietary optical coatings with a weather-resistant magnesium-alloy housing to create a multi-purpose set of glasses that delivers impressive image quality and durability. This configuration of the SLC displays an immersive 61° apparent viewing angle; a long 18.5mm eye relief and multi-position twist-up eyecups enable a comfortable viewing distance for almost any observer.

Swarovski uses phase-corrected roof prisms and fully multi-coated fluorite-containing HD glass optics in the SLC binocular. Each of the HD lenses is finished with multiple layers of SWAROTOP anti-reflective lens coating. Resulting images transmitted by the 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 10.5 ft 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 airtight 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 most close to mid-range glassing tasks.

Optical Performance
  • Magnification: 8x
  • Objective lenses: 42mm diameter
  • 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
  • P-Coating phase-correction preserves sharpness and clarity
  • 61° wide apparent viewing angle
  • 10.5 ft minimum focus distance
  • 18.5mm eye relief
Use and Handling
  • 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
Construction Details
  • Nitrogen filled for fog 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
  • Operating temperature: -13 to 131°F
  • Waterproof depth: 13 ft
  • Weight: 28.5 oz
UPC: 708026583056

Swarovski 58305 specs

Prism Type Roof
Magnification 8.0x
Objective Lens Diameter 42 mm
Angle of View 7.8° (Actual)
Field of View 409.5' @ 1000 yd / 136.5 m @ 1000 m
Minimum Focus Distance 10.5' / 3.2 m
Exit Pupil Diameter 5.3 mm
Eye Relief 18.5 mm
Interpupillary Adjustment 55.9 to 76.2 mm / 2.2 to 3.0"
Dioptric Correction ±4
Focus Type Center
Tripod Mount Yes (Adapter Optional)
Dimensions 5.9 x 4.7 x 2.5" / 149.9 x 119.4 x 63.5 mm
Weight 28.5 oz / 808.0 g
Packaging Info
Package Weight 4.05 lb
Box Dimensions (LxWxH) 10.1 x 8.5 x 4.6"

Swarovski 58305 reviews

8x42 SLC Binocular is rated 5.0 out of 5 by 3.
Rated 5 out of 5 by from Great all around binocular I have gone through a lot of binoculars over the past few years and have settled with Swarovski. I have a pair of SV10x50 and these SLC-HD 8x42. The SLC-HD have a very large sweet spot, much better than some Zeiss that I have tried (including HT's). The large SLC sweet spot is as clear and bright as the SV, but it doesn't go all the way to the edge of the FOV. I'd put these binos up against any other bino out there and they will hold there own... only an advantage for a total flat field to the SV, but the SLC's have a substantial price advantage. If there was one achilles heel for the SLC, I wish the focus wheel was a bit more precise.
Date published: 2015-01-21
Rated 5 out of 5 by from The binoculars I have been waiting for my whole life. I deserve this... way brighter than my old ones (8x42 also) and way better quality.� Pricey, yes, but you're worth it too.
Date published: 2018-04-09
Rated 5 out of 5 by from judging binocular's ease of reaching sharp focus I have used other biders Swarovski 8x42 SLC binoculars and I agree they are great. Just some thoughts though about some advertising of binoculars that are showing up lately claiming "designed for increased depth of field" IF you are looking through a variable aperature lens of a camera, you can increase the "depth of field" ( the distance infront of and behind the plane of focus that lies in acceptable focus) by decreasing the aperture (resetting to a higher f stop). In binoculars and telescopes, aperatures are not used because they darken the image and there is no provision for adjustment of sensitivity by increasing the ISO as in a camera. Also, decreasing aperture decreases the front lens' ability to resolve detail. The human eye's opening, the iris, has an adjustable aperture though. When you go out in early dawn low light, the eyes aperture is wide to let in more light. You look into the eyepiece of your binoculars and the wide open iris sees a shallower depth of field. Focus is sharp and easy to reach. Depth of field is low due to large iris opening. The large low light eye iris opening is easy to position and center over the light column coming out of the eyepiece, this ease making viewing much more comfortable, much less fatiguing. As bright sunny midday approaches, , the iris of the eye is closed down to let in less light. This closed iris increases the depth of field you see through the binoculars-telescope, the increased depth of field making the sharp spot of focus vague, the vagnus resulting in the user wheeling the focus back and forth trying to hit the sharpest focus. Focusing on a bright sunny day is frustrating as you pass through sharp focus back and forth. The ratio of front lens diameter to magnification plays into all this. The larger the front lens diameter to magnification ratio, the larger the exit pupil diameter 40mm/8X= 5mm exit pupil diameter. This means, while you are trying to focus with a low mm exit pupil diameter, you are also struggling to get your constricted eye pupils behind and hold them behind and in line with the exit pupil. A 10X 25mm diameter binocular has an exit pupil diameter of only 2.5mm. You will find yourself adjusting the interpupiliary width of your binos as you try to get a flying away hawk focused. A plus side note: When a telescope is set to maximum zoom on a telescope, the image is always darker than at lower magnification zoom settings. Your shut down pupils show a dimer darker, less contrasty view. This happens on strong binoculars also 10X? 15X?. To get to a brighter view, look through the eyepiece for a short time. This gives the Eye's pupil time to enlarge in the dimmer light. Some astronomers wear an eye patch to keep the exit pupil wide open and ready for the next viewing.The brightest view you will get in a given light level is when the eye's pupil approaches the size of the exit pupil colum of light coming out of the eyepiece. Crisper focus will come with the contraction of the pupil. Depth of field will decrease but the binoculars will have that satisfying ease of focus. Low light levels give the best image the binoculars are capable of because of no heat shimmer with no sunlight. However, haze, and fog typically at their peak in early morning can degrade image. Good time to understand the optical situation faced by any binoculars, even as Swarovski, the best. A manufacturer can only increase depth of field (objects closer and farther away appearing more in acceptable focus), but, the only way to increase depth of field is to restrict the front lens diameter, and or to decrease the magnification. Manufactures can increase the customer satisfaction of the focus wheel in other ways. I strongly recommend that they put stops on the focus wheel travel so that the user can spin the wheel to the stop, then pick up the binoculars to the eyes and expect the far off subject to be in close to exact focus. Some telescopes, because of limited back focus, already have in effect back focus stops. Nothing more frustrating than searching the sky through the binos for a hawk and then having to focus after the hawk image is acquired. With infinity back stop, the same hawk will be in focus when it is brought into vision. If the hawk isn't quite at infinity focus, simply bring the wheel back a slight amount to get sharp focus. Swarovski could put the back stop infinity focus into all their scopes and binoculars at little retooling expense and we would all have easier to focus, much more useful binoculars. Below, I have included a photo I took of a much out of place Kreider's Red-tailed Hawk. With infinity back stop, I would have been able to get this spectacular view. Without the same back stop, I might not have gotten the binoculars in focus in time. All birders could benefit from this focus improvement. Spike Selig
Date published: 2018-03-06
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