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Opteka 500mm f/6.3 Telephoto Mirror Lens for Olympus E-1, E-3, E-5, E-30, E-300, E-330, E-410, E-420, E-450, E-500, E-510, E-520, E-600 & E-620 Digital SLR Cameras (Four Thirds Mount)

The Opteka mirror lens is incredibly compact and lightweight. Using an advanced reflex design, this is a mirror lens that is ideally suited for wildlife and sports photography. It has a fixed aperture of f6.3. Opteka mirror lenses incorporates advanced computer designed optics and the latest in multi-coating techniques. The process of multi-coating assures virtually flare free photographs even under adverse lighting conditions resulting in crisp high contrast pictures with full color fidelity. 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. Specifications Filter Size: 95mm front, 34mm rear f/Stop Range: f/6.3 (fixed) Minimum Focus Distance: 6.6' (2.0 m) Angle of View: 4.1° x 2.7° (WxH) Groups/Elements: 6/7 Length: 4.7" (120mm) Maximum Diameter: 3.9" (98mm) Weight: 1.55 lbs (705g) Included Items ~ Opteka 500mm f/6.3 Telephoto Mirror Lens ~ T-Mount Lens Adapter ~ Lens Cap ~ 10 Year Warranty

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Opteka 500mm f6.3 Telephoto Mirror Lens for Olympus E-1, E-3, E-5, E-30, E-300, E-330, E-410, E-420,