Does anybody know the technical differences involved in the two autufocus modes AF and Macro? I know that you can focus closer in the macro mode, and it seems that it might be a little slower, but I'm wonder if there are other differences/downsides. I had to disassemble my XZ-1 recently in order to clean the sensor (Olympus wanted $130 for the procedure), and after reassembling, AF at the wide end of the zoom often fails in the regular AF mode. This is regardless of subject distance. Zooming in or switching it to the macro focusing mode solves the issue. Thanks!