Tip - SIZE IS IMPORTANT!
Something I have recently discovered but you may not know could save you from some frustration. Images in the Camera Roll taken with the camera are saved at 1600 x 1200 but the images in your library that have been synced from your computer are 640 x 480 or smaller depending on the aspect ratio.
A good way to test this is if you have Photogene installed, open an image from the camera roll & use the crop tool. You will notice numbers to the bottom left indicating image size. Then open an image from your library & do the same & you will see it is much smaller.
So remember for best edits always edit the image while it’s in the camera roll (or use the app to take the pic) & not after you have synced it back to the library. Editing an image from the library will result in small grainy iPhographs which are not much use unless you need a small iPhograph for the web
