Bower 500mm f/6.3 Manual Focus Telephoto T-Mount Lens
The Bower 500mm f/6.3 Manual Focus Lens is a catadioptric mirror T-mount lens, precision manufactured in South Korea.
Product Highlights
- Mirror Lens
- Just 3.9" Wide & 4.7" Long
- Accepts 95mm or 34mm Filters
- Requires Camera-Specific T-Mount
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).
- Fixed-aperture 500mm f/6.3 mirror lens in T-mount
- Multicoated optics
- Distinct out-of-focus highlight characterization
- White lens barrel helps prevent heat retention
- Accepts inexpensive 34mm filters (upon the rear of the lens)
- Made in South Korea
Features Image Stabilization No Autofocus No Tripod Collar No Physical Filter Thread Front:95 mm
Rear:34 mmDimensions (DxL) Approx. 3.86 x 4.69" (98 x 119 mm) Weight 1.43 lb (650 g) Packaging Info Package Weight 1.85 lb Box Dimensions (LxWxH) 7.0 x 4.8 x 4.7"
| Specification | ||
|---|---|---|
| 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 |