Ditto, on my 7D it's also my 'quick, a bird!' setting.
C2 is for macros and landscapes I see while i'm wandering around forests looking for birds.
C1 is for HDRs, pre-set to 2-stop bracketing with a -2/3 centre, take 3, turn EV dial to 0 centre, take 3, turn EV dial to +2/3 centre. so within 5 seconds I can get a 9-shot HDR spread 2/3EV apart.
I find it strange that my 7D can set bracketing to a custom-mode and the 5D3 can't.
Is it only the 5/7/9-brackets that can't be set to a Cx?
Or is it the special in-camera HDR setting that can't be a Custom Mode?
As mentioned AEB (and from 2 to 7 shots) works fine for C1-C3. It's just HDR that they actually worked extra hard to prevent from working. You're going to love the 5d3's 7-shot AEB with continuous drive...rip out that whole ladder with one instantaneous button press.
Since I feel a need to post a new annoyance with each of my comments here, next up: there is room for both the realtime histogram and the electronic level at once in the live view screen during manual mode, but additional INFO presses toggle one off and the other on. You can't tell me that the CPU just can't handle drawing both at once, right? How about letting us see both at once, so I can just set the whole shot up with no additional button presses. A minor nit.
I just love the electronic level in the optical viewfinder (settable to the M.Fn button, it uses the AF points to dynamically show you tilt and level). I really do like this camera, don't get me wrong...I just want them to fix the firmware a bit while they are still interested in it.
Oh and another one, I can RATE pictures immediately after taking them, but I can't do it with movies, I have to go into play mode. If I'm on set and we screw up or nail a take, I should be able to RATE right away, right? How about letting us RATE during the recording too? And also, what about the X Rejected rating that appears in DPP but doesn't appear in camera? And I would also love an Erase Images option that went by rating. So "Erase All Images ** and lower" etc. would be terrific...save us from using the Lock function when prioritizing storage.