You can technically, but you have to know a little about the image processor... there's not an easy "cut and paste" method yet.
If your gallery is, for example, http://www.trisweb.com/photos/etc/PB047612.JPG
http://www.trisweb.com/photos/etc/image/480/PB047612.JPG - 480px size.
http://www.trisweb.com/photos/etc/image/240/PB047612.JPG - 240px size.
http://www.trisweb.com/photos/etc/image/thumb/PB047612.JPG - thumb size.
Basically place "/image/[size]/" between the album name and the image filename in the URL.
Excellent! That is just perfect for how I want to use zenphoto.
Do you hope to include some kind of cut and paste option (even if it is just an option to display the relevant link on an image page) in the future as I have a number of projects coming up where the end user would need a little guidence with the links.
Thanks again.