<b>Description:</b></br> High Definition 800mm preset telephoto lens is and incorporates not only computer optical design, but also the latest optical multi-coating techniques. The process of multi-coating assuresvirtually flare free photographs even under adverse lighting conditions resulting in crisp, high contrast pictures.</br> </br> <b>Features:</b></br> 420-800mm f/8.3-16 Manual Telephoto Zoom Lens.</br> Manual Focus Telephoto Zoom Lens to use with DSLR SLR Cameras.</br> Multi Coated low-dispersion glass, anti-reflection coating.</br> Create Sharp High Quality Images.</br> Comes with Lens Pouch and Protective Caps.</br> </br> <b>Note: A camera-specific T-mount adapter ring is required to attach this to your camera body. (Adapter ring is included in the package.)</b></br> </br> <b>Specifications:</b></br> Lens Construction: 4 Elements in 2 Groups</br> Aperture Range: 8.3-16</br> Focal length: 420-800mm</br> Minimum Focusing Distance: 1.5m / 4.92ft</br> Filter diamater: 67mm</br> Package size: 27 * 9 * 9cm / 10.6 * 3.5 * 3.5in</br> Package weight: 860g / 1.9LB</br> </br> <b>Package Content:</b></br> 1 * 420-800mm f/8.3-16 Manual Telephoto Zoom Lens with retail package</br> 1 * T Mount for Nikon</br> </br>