« on: December 11, 2012, 03:20:26 PM »
I agree 100% with the original author: the 5DIII is the best overall camera I have used - an excellent balance of image quality, functionality and size/weight. I have had no problems with the camera at all (or, for that matter, any previous Canon DSLR).I'd be very interested to hear from other 5DMkIII users as to how much noise reduction they routinely apply to RAW images shot at base ISO and how the 5DMkIII compares with previous bodies that they have used in that respect.
I very surprised you need NR at base ISO. I don't normally touch the luminance slider until 6400, if then. The luminance noise performance of the 5DIII is the best I have seen from any Canon camera so far.
However, you can not do the same with the chrominance NR. I usually leave this at the default (25), but reducing it to zero gives noticeably noisier images even at base ISO. This is not really a problem, since unlike luminance NR there seems to be negligible smearing.
You might want to check if highlight tone priority is enabled as this will increase the noise level a little.
HTP is disabled, but would this affect RAW files anyway? I'm more and more convinced that I have a lemon and I'm seriously considering asking for a replacement. Unfortunately, the UK store I bought it from has gone into administration (i.e. Jacobs) so I'm not quite sure how to go about returning it or who to return it to!