Specifications:
Filter Size Rear-mounted screw-in 30.5mm
f/Stop Range Fixed f/8
Minimum Focus Distance 5.6' (1.7 m)
Magnification 1:2.7
Zoom/Focus Control N/A
Angle of View 5°
Groups/Elements 6/7
Length 3.4" (86mm)
Maximum Diameter 3" (76mm)
Weight 11.6 oz (330g)
This Lens is compatible with all DSLR Cameras

Package Include:
500mm f8 Mirror Lens
Nylon Lens Pouch
Front and Rear Lens Caps
T-mount Adapter