Hello,
I really like ZenPhoto, but there's one thing that really bothers me. I can't believe it is not possible to change the size of "normal" images (not thumbs, not full-size). I mean - in Options there's the variable of max width, but then when you set it to, say, 800px, the picture falls off the frame and is positioned unsymmetrically, and generally it looks badly. So while you physically can set the size of pictures, it won't really work, because themes (at least the 4 preinstalled ones) don't seem to be flexible enough to handle such basic change. (Programmatically wise, how hard would it be to add a new Option to define the width of the page?)

Now, of course I could try to find the code and change it myself, but I like when things work properly out of the box - basically this is the reason for using ZenPhoto and not writing a gallery myself, right?

So any advice on how to deal with this with minimum effort would be welcome

You will have to change the theme css files. Usually this is the "main" div that sets the width.

Works like charm, thank you kindly