I'm sorry in advance if this has been discussed, I was trying to find it on the forums but I couldn't. I was trying to estimate (I own a 5D mk III) how long I could record raw at 1920 x 1080 on a 64 or 128gb CF card. I thin that people here said the average rate was like 85- 89 megabytes per second. I figured that's about 25 minutes on the 128gb card. I just want to know if my estimate is correct or if I've messed up somehow and I'm way off, I've not been able to do any tests myself. I'm looking to buy a cf card and how long you can record is a big factor in which one I choose. Thanks for the help.