Description: 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. Features: 420-800mm f/8.3-16 Manual Telephoto Zoom Lens. Manual Focus Telephoto Zoom Lens to use with DSLR SLR Cameras. Multi Coated low-dispersion glass, anti-reflection coating. Create Sharp High Quality Images. Comes with Lens Pouch and Protective Caps. Note: A camera-specific T-mount adapter ring is required to attach this to your camera body. (Adapter ring is included in the package.) Specifications: Lens Construction: 4 Elements in 2 Groups Aperture Range: 8.3-16 Focal length: 420-800mm Minimum Focusing Distance: 1.5m / 4.92ft Filter diamater: 67mm Package size: 27 * 9 * 9cm / 10.6 * 3.5 * 3.5in Package weight: 860g / 1.9LB Package Content: 1 * 420-800mm f/8.3-16 Manual Telephoto Zoom Lens with retail package 1 * T Mount to Sony E Mount