Hi I do a fair bit of underwater photography and bird shots. I stumbled on the magnification and 1/2 shutter control with iS to improve my focus and ensure the eye is in focus. I have tested it and it proves how good Olympus IS really is. I am a bit excited by the prospect of being able to improve my shots. Anyone else using this method and what issues have you had using it. I assume that I can get the speed up with practice so that I don't lose too many shots by messing around with the extra button presses.