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The Bower 500mm f/8.0 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/8 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. Despite this lens' long 500mm focal length, it has a compact 3 x 3.5" size and weighs under 1 pound, making it a bit easier to handle than normal 500mm refractor lenses (it should be used with a tripod or monopod in any case). 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/8 mirror lens in T-mount |
![]() | Multicoated optics |
![]() | Distinct out-of-focus highlight characterization |
![]() | Excellent close focusing capacity |
![]() | Accepts 30.5mm filters at rear of lens barrel |
Filter Size | 30.5mm (rear) |
f/Stop Range | f/8.0 (fixed) |
Minimum Focus Distance | 5.6' (1.7 m) |
Magnification | 1:2.7 |
Angle of View | 4.1� x 2.7� (WxH) 2.7� x 1.8� (WxH) w/ APS-C (15 x 22mm) cameras |
Groups/Elements | 6/7 |
Length | 3.5" (88mm) |
Maximum Diameter | 3.0" (77mm) |
Weight | 0.70 lb (320g) |
This lens is Brand New, still in Box - Never been used!
INCLUDES: LENS, LENS POUCH, MANUAL, T-MOUNT FOR NIKON, 3xFILTERS (Skylight, Neutral Density 2 (ND2) & Neutral Density 4 (ND4))