Because SLR cameras have a reflex mirror structure and a longer flange distance, the length of a EF pancake lens is 38mm f/10. It not focus within two meters but focus beyond two meters. This is different from a mirrorless camera. This lens is compatible with all for EF-mount digital SLR cameras. It cannot be used with and mirrorless cameras! (Unless the corresponding EF-mount adapter is used.) It cannot be used with digital cameras without interchangeable lenses! First, set your camera to "M" mode. Every camera has this setting; you'll need to be patient to , or consult the manual. It's generally recommended to use AV or M mode. Tips: Using a small aperture lens in low light slow the shutter speed, resulting in blurry images. It's recommended to set the ISO to Auto (up to 6400) and keep the shutter speed above 1/50. Compatible Cameras: All for EF/-mount SLR cameras 300D, 350D, 400D, 450D, 500D, 550D, 600D, 650D, 700D, 750D, 800D, 850D, 100D, 1000D, 1500D, 200DI, 200DII/250D, 10D, 20D, 30D, 40D, 50D, 60D, 70D, 77D, 80D, 5D1, 5D2, 5D3, 5D4, 5DS, 5DSR, 6D, 6D2 1DX1, 1DX2, 1DX3, 1DS1, 1DS2, 1DS3, 1D1, 1D2, 1D2N, 1D3, 1D4, etc. Color: Black Material: plastic Package Contents: 1 x 38mm f10 pancake lens Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.