[ficofico]

The regular burst mode is 8 fps.



12 fps is a special mode that has some restrictions. On A55 (where 10 fps was special mode), the camera sets aperture to f/3.5 or maximum aperture for slower lenses, with the shutter speed & ISO chosen by the camera accordingly. You could override the defaults with + or - 2 stops exposure compensation. If you wanted control over the aperture in 10 fps mode, you had to turn off AF-C.



I guess the only difference is that A77 allows the user to choose the ISO in 12 fps mode (unlike A55 that didn't)?

Seem all right to me.... With lens like sony 70-300 SSM and 70-400 SSM for me there is no issue until you want to shot at 300 f8 or 400 f8... those lenses are slow and sharp wide open, no need to stop from wide open in 99% of 12 fps shot



With faster lens f3,5 its' a limitation, but you can shot 12 fps with af-c with a 1400$ camera....