March 19, 2010 – If you’re a 5D Mark II shooter and upgraded to the 2.0.3 firmware for the added video and audio capabilities, then you will want to update to the just release 2.0.4 version. Apparently there was a phenomenon in which the manual recording settings made in C1/C2/C3 were changed and sound could not be recorded if manual sound recording was used in the C1/C2/C3 settings and the camera was subsequently turned off (or if Auto Power Off was activated). This did not occur in modes other than C1/C2/C3. Version 2.0.4 fixes this issue and also adds the other updates listed below:
1. Adds or changes the following movie frame rates.
NTSC
1920×1080 : 30 fps (changed – actual 29.97 fps)
1920×1080 : 24 fps (added – actual 23.976 fps)
640×480 : 30 fps (changed – actual 29.97 fps)
PAL
1920×1080 : 25 fps (added – actual 25.0 fps)
1920×1080 : 24 fps (added – actual 23.976 fps)
640×480 : 25 fps (added – actual 25.0 fps)
2. Adds a function for manually adjusting the sound recording level (64 levels).
3. Adds a histogram display (brightness or RGB) for shooting movies in manual exposure.
4. Adds shutter-priority AE mode (Tv) and aperture-priority AE (Av) mode to the exposure modes for shooting movies.
5. Changes the audio sampling frequency from 44.1 KHz to 48 KHz.
6. Fixes a phenomenon where communication between the camera and the attached lens is sometimes interrupted after manual sensor cleaning. (This phenomenon only affects units with Firmware Version 1.2.4.)
Firmware Version 2.0.4 is for cameras with firmware up to version 2.0.3.
You can download the update from the Canon Japan site.
UPDATE: Canon USA now has the update available for download here.
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Founder of Current Photographer, co-host of The Digital Photography Cafe Show, Designer, Photographer, and overall tech geek.