I would like to use the Canon EF 1.4x II with Canon EF 100mm f/2.8 Macro USM and Tamron SP AF 28-75mm F/2.8 XR Di. I have seen a threat that suggested an adapter but couldn't find it. Grande flexibilité dans le grandissement apporté. Ce tube-allonge de 25 mm s'adapte entre le boîtier de l'appareil photo et l'objectif. Pour offrir une mise au point nettement plus rapprochée que le tube-allonge Canon EF 12 II. Plus le tube-allonge est long et l’objectif de focale court, plus le rapport d'agrandissement obtenu est élevé. Canon LP1219 Lens Pouch. Protective soft case for selected EF lenses. The TS-E 17mm f/4L is a professional L-series tilt and shift lens well-suited to architecture and interior photography. With up to ±6.5° of tilt for focus control and ±12 mm of shift, you can adjust perspective and composition for the perfect shot. I researched that extension tubes are the best option to get started in terms of image quality. I can't decide whether to get the EF 12mm II or the EF 25mm II extension tube. The camera that I have is a Canon Rebel T6i. Also, I have 3 lenses which are the 18-55 IS STM, 50mm f/1.8 STM & 55-250 IS STM. Compact, lightweight fixed focal length lens ideal for everyday photos, and with a large f/1.8 aperture, a perfect lens for low-light photography and creative background blur.80mm effective focal-length when attached to an APS-C camera, optimal for portraits and photos of fast moving subjects such as children and pets.A stepping motor (Gear-type STM) supports the Movie Servo AF function in The lens manual gives data for the use of the two Canon extension tubes. With the EF 12 II extension tube (12.3 mm), the maximum magnification at "105 mm" is stated as 0.40. With the EF 25 II extension tube (27.3 mm), the maximum magnification at "105 mm" is stated at 0.61. 8Wg5s. Say the aperture diameter is untouched and the focal length doubled the projected image dims to 25% of its original brightness (2 f-stops). Conversely, if the focal length cut in half, the image brightens 2 f-stops. The Math: 50mm lens 12.5mm aperture = f/4 --- 100mm lens 12.5mm aperture = f/8 --- 25mm 12.5mm aperture = f/2 Compare Viltrox Automatic Extension Tube Set for Canon EF vs Canon Extension Tube EF 12 II vs FotodioX Pro Auto Macro Extension Tube Kit for Canon EF & EF-S Lenses Irregular polarization with EF 35mm f/1.4L II + Drop-In Filter in Camera Accessories 05-02-2023; Mount Adapter EF-EOS R Compatibility with EF 70-200mm F2.8 in EF & RF Lenses 03-22-2023; Extension Tube EF 12 II Compatibility with EF Lenses and EF-EOS R Mount Adapter in Camera Accessories 12-30-2022 Canon Extension Tube EF 25 II This 25mm extension tube fits between camera body and the lens, providing even closer focusing than the Extension Tube EF 12 II Compact and portable- a great accessory to take when shooting wildlife The lens manual gives data for the use of the two Canon extension tubes. With the EF 12 II extension tube (12.3 mm), the maximum magnification at "105 mm" is stated as 0.40. With the EF 25 II extension tube (27.3 mm), the maximum magnification at "105 mm" is stated at 0.61. 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 Canon Extension Tube EF 12 II vs Vello Auto Extension Tube Set for Canon EF EF-S Mounts and Lenses

canon extension tube ef 12 ii vs 25