Thank you for viewing this item! The previous owner purchased this lens new and used it a few times. I purchased it after they put it up for sale because they bought a new lens. It can shoot from 420mm to 800mm. Third-party product. There are no stains or scratches inside the lens. The green objects in the lens photos are reflections and are not a problem. The condition is also very good. Please use the included adapter when using it. The reason I am selling it is because my camera is a mirrorless camera and it was not compatible. [Compatible Models] CANON EOS Kiss Digital X N kissX2 kissX3 kissX4 kissX5 kissX6 kissX6i kissX7 kissX7i kissX8i kissX9 kissX9i kissX90 kissX10 kissX10i kissX50 kissX80 kissX90 EOS 10D 20D 30D 40D 50D 60D 70D 80D 90D 8000D 9000D 7D 7Dmark2 6D 6Dmark2 5D 5Dmark2 5Dmark3 5Dmark4 1DX 1DX2 EOS 1D Mark IV EOS-1D X Mark I Not compatible with mirrorless cameras. Operation is manual. Canon Single-lens reflex camera Telephoto lens Camera Zoom lens