[gpick24]

On some of them it looks like you have the same problem I used to have, and one of the main reasons I changed cameras, that is, auto focus is rubbish, that`s not a dig at your camera, just auto focus in general. Saying that, the marbles look good. Don`t think the chicken needed to be in macro mode myself, did you use the flash on the others? Is your ISO set to auto? if not, try setting it to that.