Canon does NOT list compatibility with its teleconverters and TS-E lenses. They have electronic aperture control and are MF only. -Demetrius. Current Gear: EOS 5D Mark IV, EF F/2.8 Trinity, EF 50mm F/1.8 STM, EF 85mm F/1.8 USM, 470EX-AI & 600EX II-RT. Retired Gear: EOS 40D.
An integral part of many professional systems, Extender EF 1.4x III maintains high standards not only optically, but also in terms of rugged, dustproof and water resistant construction. This lens is only compatible with fixed focal length L-series lenses 135mm and over, as well as the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100 About the Canon EF 1.4x III Extender. Get some extra versatility from your telephoto L-Series lens with this precision-designed 1.4X extender. Your 300mm lens, for example, will gain 40% more reach, with a resulting focal length of 420mm (on full-frame cameras) or 672mm (on APS-C sensor cameras) once this extender has been placed in the light path. Neither the Canon compatibility table nor the Kenko compatibility table list the 75-300 as being compatible with their respective extenders. This usually means that either the extender wont fit (sometimes the lens wont even mount) or it wont function correctly (communication between lens and camera wont work correctly). With an extender and a crop-sensor camera, you will get the field-of-view equivalent (not "working distance") of a 157-448mm lens compared to the 70-200mm lens used alone with a full 35mm frame camera . The 1.4 extender will change your 70-200mm f/4 into a 98-280mm f/5.6, and then the field of view is restricted by the smaller sensor. . 241 326 63 265 59 356 473 106