AntonioAndKarin says:
Appart from focus, the problem could also be resolution of the picture (but i doubt this is the case here, since you most likely upload the originals you took off the camery directly without processing, right?). For ideal results, make sure the pictures uploaded have a minimum resolution of around 800 pixels horizontally. The more, the better :)
AntonioAndKarin says:
I have the same problem with my digital camera, if the autofocus doesn't work 100% reliable, the picture just ends up blury... not much one can do, with the cats always moving around its hard to use manual focus etc. Unfortunately CSI-Style ENHANCE PICTURE ZOOM where you can zoom in without the picture getting blured had to be put off for picato 3.0 ;)