I have a Canon 5D Mk3 and have just installed LR 4.1, which I was desperate for (just shows how dependant I am now on this programme for my workflow!) as was having to use Canon's awful software to convert the raw files. I did download the beta raw converter from adobe labs, but I found this to be pretty bad on skin tones, rendering grainy, noisy files, with dark shadows, almost as if everyone had hand't shaved for a couple of days. Unfortunatelly I am getting then same thing from the LR update, is anyone having the same problem? The files from this camera should be pretty amazing, specially at 100ISO.