Hi, my problem is that the 600D does not give users control over the exposure simulation mode like higher end canons like the EOS 5D do, and that the 600D disables exposure simulation only with its internal flash on.
And that is very frustating for me because I have to use an external flash since I am photographing underwater (with an ikelite flash, ttl connection to the 600D works). Plus: As I am after super macro I urgently need live view in connection with flash and manual control over f stop and exposure time. With the viewfinder focussing is not as exactly possible as manual with live view and its 5x / 10x magnification function (especially not underwater with a mask on).
Can you make the 600D using automatically "stills display" with an external flash too as it does with its internal flash? Or may be dissable exposure simulation in live view mode alltogether? In fact I would prefer "stills display" as default because I often use under exposure in combination with raw.
By the way: I heard of a focus bracketing solution for canon compacts by chdk. Is there some for canon DSLR? But ok - that is another problem.