ITEM NAME:Macro shot . The intermediate ring, and cannon EOS EF EF close-up lens ring A1L9 Macro shot . The intermediate ring, and cannon EOS EF EF close-up lens ring A1L9 For EOS close-up ring extension tube. Material: strong durability, adopt durable magnesium alloy, not plastic or normal Alloy Consists of three extension tube (9mm 16mm 30mm) The three tubes in various combine it, it is possible to freely adjust the magnification and focus range. Since it does not contain the optical components in the tube, it is possible to macro photography by taking advantage of the lens original performance without deteriorating the photographic image. the application model of the camera: EOS 1D〠1Ds〠1D Mark II〠1Ds Mark II〠1D Mark II N〠1D Mark III〠1Ds Mark III EOS 40D〠30D〠20D〠10D〠5D〠5D Mark II EOS 450D〠400D〠350D〠300D〠1000D electronic contacts, such as D 1000, manual focus! magnification varies depending on the lens. Package Contents: 1 x The extension tube Note:Light shooting 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..Macro shot. For EOS close-up ring extension tube. EOS 40D〠30D〠20D〠10D〠5D〠5D Mark II. EOS 450D〠400D〠350D〠300D〠1000D. magnification varies depending on the lens.