For the EF 200-400 f/4L IS 1.4x
Canon has updated both the discontinued EOS-1D Mark IV and the EOS-1Ds Mark III to work correctly with the new EF 200-400 f/4L IS 1.4x lens that is about to hit stores.
Canon EOS 1D Mark IV
- Version 1.1.3
- Enables the center AF point to autofocus when the camera is used with the EF 200-400mm F4L USM Extender 1.4X lens and an Extender, whose combined maximum aperture is f/8.
- Fixes a phenomenon in which abnormal images may result when continuous shooting mode is enabled and the image size is set to “RAW” or “RAW+JPEG.
- Download Here
Canon EOS 1Ds Mark III
- Version 1.2.2
- Enables the center AF point to autofocus when the camera is used with the EF 200-400mm F4L USM Extender 1.4X lens and an Extender, whose combined maximum aperture is f/8.
- Download Here
cr
From Arthur Morris
Arthur has written a great article about getting f/8 autofocus with the new Canon EOS-1D X. A lot of birders used the EF 800 f/5.6L IS with the Canon 1.4x TC & EOS-1D Mark IV for example. The biggest complaint with the EOS-1D X has been the inability to get f/8 autofocus.
However, with the Kenko Teleplus PRO 300 DGX 1.4 teleconverter you can give the EOS-1D X the ability to autofocus at f/8 with the EF 800 f/5.6L IS. Another plus of using the Kenko teleconverter is you’re able to move the AF point at f/8. With the Canon teleconverter on say, the 1D Mark IV, you only had the center AF point active.
Arthur has posted lots of images to show the image quality that is possible with the Kenko 1.4x TC.
From Arthur Morris
Once I got down in the mud I discovered that AF with the the Kenko Teleplus PRO 300 DGX 1.4x AF Teleconverter was fast and sure and accurate. I have been out every morning and afternoon since then and have totally fallen in love with the 1DX. That first afternoon I managed to get a huge gob of black, sticky, gooey much all over my brand new camera. It was a proper baptism.
Read the entire article
Kenko 1.4 TC at B&H $259 | Canon EOS-1D X at B&H $6799
cr
