500mm f/6.3 Manual Focus Telephoto T-Mount Lens
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).
Focal Length | 500mm |
Maximum Aperture | f/6.3 |
Minimum Aperture | f/6.3 |
Pinhole Diameter | |
Lens Mount | T-Mount |
Lens Mount | |
Lens Mount | |
Format Compatibility | Full-Frame |
Angle of View | 5� |
Area of Coverage | |
Tilt-Shift | |
Minimum Focus Distance | 6.1' / 1.86 m |
Maximum Magnification | |
Macro Reproduction Ratio | |
Optical Design | 7 Elements in 6 Groups |
Diaphragm Blades | |
Focus Type | Manual Focus |
Image Stabilization | None |
Leaf Shutter | |
Tripod Collar | |
Filter Size | 95 mm (Front) 34 mm (Rear) |
Dimensions (� x L) | 3.86 x 4.69" / 98.04 x 119.13 mm |
Length at Maximum Extension | |
Weight | 1.43 lb / 650 g |