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Bower 800mm f/8 Manual Focus Telephoto T-Mount Lens

B&H # BO8008K MFR # SLY8008
Bower 800mm f/8 Manual Focus Telephoto T-Mount Lens

Bower 800mm f/8 Manual Focus Telephoto T-Mount Lens Top View

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Product Highlights

  • Mirror Lens
  • Just 4.4" Wide & 5.2" Long
  • Accepts 105mm or 30.5mm Filters
  • Requires Camera-Specific T-Mount

The Bower 800mm f/8 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 or for nearly any film camera.  However, in every case the fixed f/8.0 aperture is not communicated to the camera body.  As such, you can use the camera in the "M" manual exposure mode or the "A" aperture-priority mode (if your camera is so equipped).

This lens, at 4.4 x 5.2" and just over 2 pounds, has a broad diameter and stocky build.  It is a bit easier to handle than a normal 800mm refractor lens, but it is still a super-telephoto in any case (you should use a tripod/monopod in any case for best results).  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).

Fixed-aperture 800mm f/8.0 mirror lens in T-mount
Multicoated optics
Distinct out-of-focus highlight characterization
White lens barrel helps prevent heat retention
Accepts small, less-costly 30.5mm filters upon rear of barrel (also accepts 105mm filters)
Made in South Korea
UPC: 636980500362
Performance
Focal Length 800mm
Aperture Maximum: f/8
Minimum: f/8.8
Camera Mount Type T-mount (T-thread)
Format Compatibility 35mm Film / Full-Frame Digital Sensor
DSLR (APS-C Sensor)
Angle of View
Minimum Focus Distance 11.5' (3.51 m)
Magnification Not Specified By Manufacturer
Maximum Reproduction Ratio Not Specified By Manufacturer
Elements/Groups 8/8
Diaphragm Blades Not Specified By Manufacturer
Features
Image Stabilization No
Autofocus No
Tripod Collar No
Physical
Filter Thread Front:105 mm
Rear:30.5 mm
Dimensions (DxL) Approx. 4.37 x 5.67" (11.10 x 14.40 cm)
Weight 1.94 lb (880 g)
Packaging Info
Package Weight 2.55 lb
Box Dimensions (LxWxH) 9.2 x 5.7 x 5.7"
Bower 800mm f/8 Manual Focus Telephoto T-Mount Lens
  • Front Cap
  • 1-Year Warranty
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