Product Description
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).
| Performance | |
| Focal Length | 500mm |
| Aperture | Maximum: f/6.3 |
| Camera Mount Type | T-Mount (T-Thread) |
| Format Compatibility | 35mm Film / Full-Frame Digital Sensor DSLR (APS-C Sensor) |
| Angle of View | 5° |
| Minimum Focus Distance | 6.1' (1.86 m) |
| Magnification | Not Specified by Manufacturer |
| Maximum Reproduction Ratio | Not Specified by Manufacturer |
| Elements/Groups | 7 / 6 |
| Diaphragm Blades | Not Specified by Manufacturer |
| Features | |
| Image Stabilization | No |
| Autofocus | No |
| Tripod Collar | No |
| Physical | |
| 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) |
| Warranty Length | |
| USA Warranty Extension |
