I used my new 5D3 in anger for the first time last night, when I did a job for a big birthday party at the Bonnie Doon golf club.
Was a great night, and I was just a little nervous at using a new camera for a paid job, although I did take my 60D with me as a back-up.
I have found that the white balance of the 60D is not always right, but the 5D3 is just about perfect.
The camera was superb!
The focussing is amazing, and out of 560 photos, only 3 photos were slightly out of focus, which was probably my fault.
The venue was very dark, and I used my 580EXII flash bouncing it off the ceiling, which I find the best method in these circumstances as people are happy to be photographed and it doesn't give them red eyes.
Here's a few shots from the night, all taken from the jpegs (but of course I will process all the photos later from the RAWs), straight out of the camera with NO adjustments whatsoever. They are very low res too.