I have been playing with CHDK on my SX160IS with only minor success (simple HDR script works, shutter release works). I was wanting to be able to do focus stacking with the lens set at maximum (16x) and the camera coupled to a second lens (thus yielding photomicrographs). Has anybody perhaps tried this? I don't want to spend weeks learning the scripting if someone knows it won't work! Thanks in advance for any help/hints.