Protip #1: you can use nully's image width hack thingy to widen out your viewing area.
Protip #2: you can use additional tags to limit the default view photo size. Change the starting tag to {img width=600 height=400} (using the correct brackets, of course) and it'll show that size as default; if you use only one (width or height), it'll scale the other proportionally. If someone wants to see the image full size, all they gotta do is click on it.