Opteka 500mm f/8 High Definition Telephoto Mirror Lens for Nikon D4S, DF, D4, D3X, D810, D800, D750, D610, D600, D7100, D7000, D5500, D5300, D5200, D5100, D3300, D3200 and D3100 Digital SLR Cameras

The Opteka manual focus 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 f8. It comes complete with a soft pouch and three (3) rear mounted, 30.5mm filters, (ND-2X, ND-4X & Skylight). Opteka mirror lenses incorporates advanced computer designed optics and the latest in multi-coating techniques.á 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.

Specifications
Filter Size: 72mm front, 30.5mm rear
f/Stop Range: f/8.0 (fixed)
Minimum Focus Distance: 5.6' (1.7 m)
Magnification: 1:3
Angle of View: 5Deg
Groups/Elements: 6/7
Length: 3.4" (8.6 cm)
Maximum Diameter: 3.0" (7.6 cm)
Weight: 0.79 lb (360 g)

Included Items
~ Opteka 500mm f/8 Telephoto Mirror Lens
~ 3 Filters (Skylight, Nd 2x, Nd 4x)
~ T-Mount Lens Adapter
~ Lens Caps
~ Lens Pouch
~ 10 Year Warranty