I see you are in pokfulam- if you are close to Chi Fu, there is a good photo shop there on the bottom level- the same level as the food court. You just give them your memory stick, they plug it in to the machine, then you manually (on a touch screen) choose which pictures you want and the size you want them. They give your memory stick back to you as soon as you are done. Oh, and have cash with you because they ask you to pay in advance for digital photos. The pics are usually done within a couple of hours, depending on how busy they are, and what time you submit the photos.
3R are 90cents each, 4R are $1 each.