6501300mm F8F16 Telephoto Manual Zoom Lens with Adapter Ring for Sony AFMount Camera Item Type: Telephoto LensMaterial: Alloy + Optical GlassColor: As Picture ShownFront Filter Size: Approx. 95mm/3.7inWeight: Approx. 2276g/80.3oz Focal Length: 650-1300mm Aperture: F8-F16 (not Adjustable) Mount: for AF Mount Application: For Sony AF Mount Camera Optical Structure: 8 Elements in 5 Groups Viewing Angle: 3.8° (650mm Focal Length) 2° (1300mm Focal Length) Coating: Multi-Layer MC Cating Focus Method: Manual Focus Anti-Shake Function: No Closest Focusing Distance: 5m Tripod Expansion Port: 1/4in Screw Hole Applicable Scenarios: Landscape, architecture, people, insects, tourism, business, sports, wedding, humanities, etc. How e: 1. Align the identification point of the lens mount with the identification point of the adapter ring, and rotate it clockwise. When you hear a "click" sound, it means that the lens has been installed in place 2. Align the identification point on the lens adapter ring with the adapter ring to the identification point on the fuselage, and rotate clockwise when you hear a "click" sound, it means it is installed in place 3. Press and hold the camera lens release button and rotate it counterclockwise to remove the lens together with the adapter ring 4. Install the adapter ring release button and rotate it counterclockwise, the adapter ringcan be removed from the lens