The Extender EF 2x III is specially designed to work in conjunction with L-series IS super-telephoto lenses, extending their focal length by a factor of 2x. The extender's design ensures there is no loss of lens performance or image quality. Compatibility. This extender is only compatible with fixed focal length L-series lenses 135mm and over
The Extender RF 2x offers sharpness and versatility with 2x extra magnification to double the reach of compatible RF telephoto lenses and zooms. View details RF 2x EF Lens Extenders

05-19-2023 01:52 PM. I own a 2X gen II and I have tried a 2X gen III. I think the gen III is marginally better and either will provide acceptable photos with a very sharp prime IF you don't compare the sharpness and contrast of the bare lens to the 2X images. I have used 1.4X converters fairly often and now own an EF 200-400 f4 with the built

If you used a 1.4x extender then the 100-400 f/4-5.6 becomes a 140-560mm f/5.6-8 lens and that WILL work becuase the wide-open apertures are f/8 or lower for every focal length available. The 2x extender must not be used with any with a focal ratio higher than f/4. Mount Adapter EF-EOS R question about compatibility with Extender EF 1.4x III in Camera Accessories 11-14-2023; Looking to replacing the 18-55 kit lens with a tamron in EF & RF Lenses 08-28-2023; EF better image than RF on R6, Normal? in EF & RF Lenses 09-27-2022; Extender EF 2x III Compatibility in EF & RF Lenses 03-18-2022 Anyone tested Canon EF 100mm f/2.8L Macro IS USM + Canon EF 2x III Extender? Canon EF 100mm f/2.8L Macro IS USM is not there in the compatibility list. It is not in the compatibility list because it is not compatible - physically impossible to fit the Extende because it projects forwards. . 244 81 310 224 281 391 341 110 132

canon extender ef 2x iii compatibility