500mm F6.3 Super Telephoto Mirror Lens Fit for Minolta/Sony AF Mount DSLR CameraWhite Item Type: Telephoto Mirror Lens Material: Alloy + optical glass Color: As Pictures Shown  Weight: Approx. 838g/29.6ozFocal length: 500 mm Aperture: F6.3 Mount: for AF mount Applicable model: for Minolta/Sony AF Mount SLR Camera Optical structure: 6 Elements in 7 Groups Perspective: 5 ° Coating: multi-layer MC coating Focus mode: manual focus Anti-shake function: none Closest focusing distance: 2m/6.6ft Applicable scene: landscape, architecture, characters, 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