Well, correct me if I'm wrong, but isn't the Multiple-Exposure Feature something new for a Canon Dslr!? I'd love to see this feature included in the 5D iii.
Just curious. What does in-camera multiple-exposure offer that couldn't be done with layers in Photoshop? When Canon announced this, I admit I was scratching my head thinking this sounded more like a gimmick than a 1D series feature. I must be missing something here.
I'm not anti-tweaking photos, but I think it's much more fun to think creatively about setting up shots and trying to get the image I have in my head right in-camera first. I have been able to set-up multiple-exposures in-camera with my classic 5D but am very limited by light conditions and distance I can move from the camera during the exposure etc. Plus not all find it easy to use photo-editing software!
Try post processing 1k raw images like I do sometimes ... and see the time you save with this gimmick. Trust me it is not fun sitting on the comp for a week merging all the AEB frames.... It may not be much for you, but for some it is very welcome.
I used to have a 1D2, and loved to take HDR shots with the 7AEB and 8fps. Now I have a 5D, I have almost given up on HDR since it is so much more inconvenient now.... I would like to get back into it once they have a decent set of functions on the 5D3.