I also own a Hero and there are a few things you might try. First, unsles you need the extra 2 megapixels, go ahead and switch down to 3MP for your pictures. I've noticed this has helped in a few situations. (Maybe the phone processes the 3MP photos faster than the 5MP photos?) Also, make sure you keep the phone steady even /after/ you hit the button to take the picture. This definitely will help. Another thing you can do is bump up the sharpness just a bit in the settings and see if that helps. Finally, you can touch on the screen itself to tell the camera exactly which part of the picture you want to be in focus.