Extender EF 2x III. Prices and specifications subject to change without notice. Pricing is determined by each dealer and may vary. Designed to extend a lenses focal length by a factor of 2x, the redesigned Canon Extender EF 2X III delivers optical performance on par with the finest Canon super telephoto lenses.

I am doing bird photography. I am very happy with my Canon EF 400mm f4 DO IS ii in combination with Extender EF 1.4x iii and EF 2x iii. I am considering an upgrade of my Canon 7D ii and see only the Canon R5 as an upgrade option. My question is if anyone has experience or has read about others' experiences with the combination R5 and EF 400mm

The Canon EOS 2000D produced images of good quality during the review period. This camera produces noise-free images at ISO 100 up to ISO 800, with some noise appearing at ISO 1600. The faster setting of ISO 3200 is still usable, although we'd suggest avoiding ISO 6400 and especially 12800 if possible.
Canon EOS 7D Mark II Canon EOS 5D Mark IV Canon EF 50mm f/1.4 USM Canon EF 100mm F2.8L Macro IS USM Canon Extender EF 1.4x III +4 more Reply Reply with quote Reply to thread Complain
In late 2010 Canon updated the EF Extender range to the Canon Extender EF 1.4x III and Canon Extender EF 2x III. These Extenders match the high image quality of the latest EF lenses and ensure the fastest and most accurate autofocus performance possible. Each Mark III Extender features an integrated microprocessor chip to provide complete
Canon EF 100-400mm f/4.5-5.6L IS USM Canon EOS 70D Canon Extender EF 1.4x II Canon Extender EF 1.4x III Canon Extender EF 2x II Canon Extender EF 2x III Kenko Teleplus MC4 AF 1.4 DGX Kenko Teleplus MC4 AF 2.0 DGX Kenko Teleplus MC7 AF 2.0 DGX Kenko Teleplus Pro 300 AF 1.4x Kenko Teleplus Pro 300 AF 2.0x
Sample Pictures Specifications Product Images Owner's Manual Buy Now Rent by Bryan Carnathan Load Comparison Images The Canon EF 2x III Extender mounts between your Canon EOS Digital SLR and a compatible lens (primarily Canon L Series lenses), extending the focal length of the lens by a very noticeable 2x.

The 300 f/2.8 IS performs better with the Canon EF 1.4x II Extender and the Canon EF 2x II Extender than most if not all other Canon lenses. Adding the 1.4x creates a 420mm f/4.0 IS lens - a very nice focal length and max aperture - and yes, IS still functions with the extenders installed.

I tested three lenses: the new Canon EF 100-400mm f/4.5-5.6L IS II USM, the original Canon EF 100-400 f/4.5-5.6L IS USM, and, because people will ask, the Canon EF 70-200mm f/2.8L IS II USM attached to a Canon Extender EF 2X Mark III. They were tested at full telephoto, which should be 400mm.
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    • canon extender ef 2x iii sample images