The Bower 500mm f/6.3 Manual Focus Lens is a catadioptric mirror T-mount lens, precision manufactured in South Korea.
Product Highlights
The Bower 500mm f/6.3 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/6.3 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.
This lens has a broad diameter and stocky build, making it a bit easier to handle than a normal refractor lens. 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).
Features | |
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Image Stabilization | No |
Autofocus | No |
Tripod Collar | No |
Physical | |
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Filter Thread | Front:95 mm Rear:34 mm |
Dimensions (DxL) | Approx. 3.86 x 4.69" (98 x 119 mm) |
Weight | 1.43 lb (650 g) |
Packaging Info | |
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Package Weight | 1.85 lb |
Box Dimensions (LxWxH) | 7.0 x 4.8 x 4.7" |
Specification | ||
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Focal Length | 500mm | |
Maximum Aperture | f/6.3 | |
Minimum Aperture | f/6.3 | |
Lens Mount | T-Mount | |
Format Compatibility | Full-Frame | |
Angle of View | 5° | |
Minimum Focus Distance | 6.1' / 1.86 m | |
Optical Design | 7 Elements in 6 Groups | |
Focus Type | Manual Focus | |
Image Stabilization | None | |
Filter Size | 95 mm (Front)\n34 mm (Rear) | |
Dimensions (ø x L) | 3.86 x 4.69" / 98.04 x 119.13 mm | |
Weight | 1.4 lb / 650 g |