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Bower

Bower T-Mount 500mm f/8 Mirror Telephoto Lens with Case, Skylight, Neutral Density 2 (ND2) & Neutral Density 4 (ND4) Filters (Requires T-Mount)

SKU: BOW5008 MFR: SLY5008
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About the Bower 500mm F/8



Bower T-Mount 500mm f/8 Mirror Telephoto Lens with Case, Skylight, Neutral Density 2 (ND2) & Neutral Density 4 (ND4) Filters (Requires T-Mount)
The high-power Bower T-Mount 500mm f/8 Mirror Telephoto Lens is a manual focus mirror T-mount lens that is designed to work with 35mm/Full Frame Sensors and most digital SLR camera models, including Canon, Minolta, Nikon, Pentax, Samsung, and Sony. Its compact size provides superior lightweight handling and maximizes storage convenience. For best results, it is recommended to use with a monopod, tripod or chest supports to alleviate shake. It has a minimum focus distance of 5.75 feet and a 5° angle of view. It also has a much different rendering of out of focus areas than a normal lens; highlights will be doughnut-shaped rings with more saturation and contrast on the edge of the ring than on the center. This T-Mount 500mm f/8 mirror lens is offered in new condition only, with free shipping!

Product Highlights

  • Fixed-aperture 500mm f/8 mirror lens in T-mount
  • Multicoated optics
  • Distinct out-of-focus highlight characterization
  • Excellent close focusing capacity
  • Accepts 30.5mm filters at rear of lens barrel
  • Ideal for astrophotography use when mounted to a motorized equatorial telescope mount



From the Manufacturer

The Bower 500mm f/8.0 Manual Focus Lens is a catadioptric mirror T-mount lens, precision manufactured in South Korea.

When combined with the T-mount to fit your camera system, this mirror lens mounts to camera and works on both "full frame" cameras as well as the "APS-C" style digital SLR cameras. T-Mounts are available for all the digital SLR systems, as well as for C-mount systems. However, in every case the fixed f/8 aperture is not communicated to the camera body. As such, you can use the lens in "M" manual exposure mode or "A" aperture-priority mode only.

Despite this lens' long 500mm focal length, it has a compact 3 x 3.5" size and weighs under 1 pound, making it a bit easier to handle than normal 500mm refractor lenses (it should be used with a tripod or monopod in any case). It also has a much different rendering of out of focus areas than a normal lens; highlights will be doughnut-shaped rings with more saturation and contrast on the edge of the ring than on the center.

This lens is an ideal candidate for astrophotography use when mounted to a Vixen GP2 Photo Guider (or other motorized equatorial telescope mount).

Bower 500mm F/8 Includes

  • Bower 500mm f/8.0 Manual Focus Telephoto T-Mount Lens
  • Front Cap
  • Bower Warranty

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Bower 500mm F/8 Features

  • Fixed-aperture 500mm f/8 mirror lens in T-mount
  • Multicoated optics
  • Distinct out-of-focus highlight characterization
  • Excellent close focusing capacity
  • Accepts 30.5mm filters at rear of lens barrel

Bower 500mm F/8 Specifications

Filter Size 30.5mm (rear)
f/Stop Range f/8.0 (fixed)
Minimum Focus Distance 5.6' (1.7 m)
Magnification 1:2.7
Angle of View 4.1° x 2.7° (WxH)
2.7° x 1.8° (WxH) w/ APS-C (15 x 22mm) cameras
Groups/Elements 6/7
Length 3.5" (88mm)
Maximum Diameter 3.0" (77mm)
Weight 0.70 lb (320g)
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