Quote from: CFP on June 20, 2013, 05:19:48 PM
Yes that is how it works.
The RAW videos and silent pics are the images that are read from the sensor for the LiveView preview.
The max resolutions depend on the sensor resolution. My EOS 600D's sensor has a resolution of 5202 X 3465. The higest resolution that's possible for RAW is 1734 X 1155. That's because Canon doesn't read the full sensor and scales it to what ever we want but skips lines and columns to create their desired resolution. In the 600D's case, it skips every third line and column (5202 / 3 = 1734 & 3465 / 3 = 1155) to get a resolution that is close to full HD (1920 X 1080) in terms of width. So it can be used to create full HD H.264 videos.
Only if the developers would find a way to set the lines & columns skipping, higher resolutions might be possible on the 5D Mark III in 1X mode.
But it doesn't look like that is possible.
Thank you, CFP! I really appreciate your astute explanation for the current limitations with RAW HD videos from Canon EOS DSLRs. The 5D Mk III has a maximum sensor resolution of 5760 x 3840. 5760/3 = 1920. What a fabulous coincidence! Other sensors simply don't have such a perfect pixel count.