Dingfeng Auto Fucus Close-up Extension Tube for Canon EOS DSLR SLR Lens,fits for Canon EOS 1d, Mark II, III, IV, 5D,Mark II,7D, 10D, 20D, 30D, 40D, 50D,1100D, 700D, 650D, 600D, 550D , 500D, 450D, 400D, 350D, 300D, 100D, Rebel X, Rebel XT, Rebel XTi, Rebel XSi..... ? Note: if it fail to connect with your camera, please clean the camera lens and the spots of the tube, or please contact D&F After-sales service at once, we are happy to help. Features: Material: Alumium + Plastic Tubes Lengths(mm): 13mm + 21mm + 31mm For Canon EOS EF EF-S and IS series lenses Can use Individually or Combined Lightweight and portable,extreme Close-up Package: 1 x 13mm Tube 1 x 21mm Tube 1 x 31mm Tube Kindly Note: If you have any request or question, please feel free to contact us, we always reply most emails within 12 hours.In comparison, a close up filter is often blamed for degrading the quality of image. Auto-focus function can operate. This extension tube does not affect image quality as there is no optics inside. Moves the lens from the film or digital sensor. The closer the focus is, the greater the magnification. Extreme Close-Ups: Transform your Lens into a Macro Lens, Suitable for all Canon EOS EF EF-S and IS series lenses, such as Canon EOS 1d, Mark II, III, IV, 5D,Mark II,7D, 10D, 20D, 30D, 40D, 50D, Digital Rebel X, Rebel XT, Rebel XTi, Rebel XSi, 1100D, 700D, 650D, 600D, 550D , 500D, 450D, 400D, 350D, 300D, 100D.... The Canon Auto Macro Tube Set includes 3 extension tubes:13mm, 21mm, 31mm.Manufacturer: Dingfeng. Date First Available: January 8, 2021. Best Sellers Rank: #12 in Lens Extension Tubes. Customer Reviews: 4.0 out of 5 stars 47 ratings 4.0 out of 5 stars. : B08SJB6G95. Item Weight: 5.9 ounces. Package Dimensions: 3.82 x 2.99 x 2.99 inches.