JJC 25mm Tube Auto Focus (AF) Extension with TTL Exposure for Close up Image Photography Canon EF/EF S Mount DSLR & DLS Cameras

For Canon EF/EF-S Mount DSLR & SLR Cameras - 1D X Mark III, 1D X Mark II, 1D Mark II N, 1D Mark III, 1D Mark IV, 1D X, 1Ds, 1Ds Mark II, 1Ds Mark III, 1Dx Mark II // 10D, 20D, 20Da, 30D, 40D, 50D, 5D, 5D Mark II, 5D Mark III, 5D Mark IV, 5Ds, 5Ds R// 6D, 6D Mark II, 7D, 7D Mark II // 60D, 60Da, 70D, 77D, 80D, 90D // 100D, 200D, 300, 300D, 300V, 300X, 350D, 400D, 450D, 500, 500D, 550D, 500N, 600D, 650D, 700D, 750D, 760D, 800D, 850D // 1000D, 1100D, 1200D, 1300D, 14000D, 1500D, 3000D, 4000D For Canon EF/EF-S Mount DSLR & SLR Cameras, with 25mm length tube Ideal for macro photography, designed with all the circuitry and mechanical coupling to maintain auto focus Designed to enable a lens to focus closer than its normal set minimum focusing distance Adopts metal bayonets with gilt metal contacts