500mm f/6.3 Manual Focus Telephoto Lens for Canon EOS Product Image

500mm f/6.3 Manual Focus Telephoto Lens for Canon EOS


Product Description

The Bower 500mm f/6.3 Manual Focus Lens is a catadioptric mirror T-mount lens, delivered in this configuration with a T-mount for Canon EOS cameras.  This lens is precision manufactured in South Korea.

When combined with the T-mount, this mirror lens mounts to any Canon EOS camera and works on both "full frame" cameras like the 5D as well as the "APS-C" style digital SLR cameras.  However, 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).

Filter Size 95mm front, 34mm rear
f/Stop Range f/6.3 (fixed)
Minimum Focus Distance 6.6' (2.0 m)
Magnification Not Specified by Manufacturer
Angle of View 4.1° x 2.7° (WxH)
2.6° x 1.7° (WxH) w/ APS-C (15 x 22mm) cameras
Groups/Elements 6/7
Length 4.7" (120mm)
Maximum Diameter 3.9" (98mm)
Weight 1.55 lbs (705g)