500MM/F6.3 Mirror Lens
500MM Mirror Lens is a great wildlife and bird portrait lens.
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. This lens has a good performance on all Canon, Nikon, Sony, Olympus and any other cameras.
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.

Specifications:
Focal Length: 500mm
Aperture Maximum: f/6.3
Camera Mount Type: T mount 42mm to Canon, Nikon, Sony, Olympus, Petax and so on
Front Filter Size 95mm
Angle of View: 5°
Minimum Focus Distance: 2m
Focus Type: Manual Focus
Coat: Multi-Coated
Groups/Elements: 5/8
Weight: 2000g