Canon taking care of some old Prime DLSRs, today Canon updated its EOS-1D Mark IV and the EOS-1Ds Mark III firmware to work correctly with the newly announced EF 200-400 f/4L IS 1.4x lens,
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
