Indeed it does. You can program it to automatically take up to 29 shots with exposures differing by as little as 1/3 stop (way over board for HRD but nice to have that flexibility). It also does time lapse but I am not interested in that yet. The beauty is that you program the control to the way you want and it takes over the camera (including mirror lockup). I use it to take 5 or 7 exposures for my HDR shots as the 7D only takes 3 shots automatically.
Cheers
Alan