Shop Our Canon Accessories For EF 100-400mm f/4.5-5.6L IS II USM. Explore Specs And Features From Canon U.S.A, Inc. Extension Tube EF 25 II . Product Highlights With a compact, lightweight design that's ideal for travel, this ultra-wide-angle EF-S 10-18mm f/4.5-5.6 IS STM zoom lens shoots dramatic scenes and striking architecture. The 10-18mm range gives you an ultra-wide perspective, with exacting precision when shooting buildings and skies without the need to step back, allowing you to capture This lens can be used with an extension tube, which increases the maximum magnification to 1.19× (EF 12 II) or 1.39× (EF 25 II). In these cases, focusing at infinity is sacrificed, with maximum distance reduced to 1002 mm (3.3 ft) and 606 mm (2.0 ft) respectively. EF 100 mm f /2.8L Macro IS USM lens Compare Kenko Auto Extension Tube Set DG 12, 20 & 36mm Tubes for Canon EOS Digital and Film Cameras vs Canon Extension Tube EF 25 II vs Vello Auto Extension Tube Set for Canon EF EF-S Mounts and Lenses V2 vs Vello Auto Extension Tube Set for Canon EF EF-S Mounts and Lenses For the image above, I added two Canon EF 25 II Extension tubes and a single Canon EF 12 II Extension tube. Whenever you use extension tubes with a long lens be sure to stop down to prevent vignetting. A viable alternative to purchasing several of the more expensive Canon extension tubes is to purchase the Kenko Auto Extension Tube Set DG for Hello, I am looking for an extension tube for the RF system. I have the Extension Tube EF 25 II for the EF system that I use on a regular basis. As far as I know Canon does not offer one for the RF system at the present time. EF25 II extension tube ? Mark IV Canon EF 300mm f/4.0L IS USM Canon EF 100mm F2.8L Macro IS USM +5 more > 25 ft = 135mm: Top posters in this forum. 5: rsn: 4: Compare Vello Auto Extension Tube Set for Canon EF EF-S Mounts and Lenses V2 vs Kenko Auto Extension Tube Set DG 12, 20 & 36mm Tubes for Canon EOS Digital and Film Cameras vs Canon Extension Tube EF 25 II vs Viltrox Automatic Extension Tube Set for Canon EF Explore Specs And Features From Canon U.S.A, Inc. To Find The Right Product For Your Needs. Extension Tube EF 25 II . Product Highlights. 25mm fully coupled The difference between the extenders is that the 25 is a 2x, and the 12 is a 1.4x. They give you the option of extending your current lenses effective length, without the higher cost of buying new lenses. By using the extenders, you will lose 1 f-stop with the 1.4x, and 2 f-stops with the 2x. yXDR.