Firmware version 1.0.8 for the Canon EOS-1D Mark IV has been released, incorporating the following fixes.

- Fixes a phenomenon in which the set aperture moves unexpectedly when shooting movies in manual exposure mode using some Canon lenses (such as macro lenses).
- Corrects misspellings in the French and Spanish menus for applicable products.

The Version 1.0.8 firmware is for cameras with firmware up to Version 1.0.6. If the camera’s firmware is already Version 1.0.8, it is not necessary to update the firmware. Note that cameras with the Version 1.0.8 firmware cannot be downgraded to a previous firmware version (such as Version 1.0.6).

Canon EOS-1D Mark IV Firmware 1.0.8

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