Just noticed that some of the pictures I've taken with my iPhone 4 are saved at a much lower resolution. When I email them, I'm not getting an option to pick the size. It's almost as if when I email a picture and am given a choice of the size to send, it saves them at that smaller size on my iPhone and losing the higher resolution picture. For instance when I use Info for one of my pictures it says it's a 152KB file, with a dimension of 640x478, that was modified. The funny thing is, I didn't modify it to a smaller size other than emailing it.