One column designs for WordPress are becomming more popular as they allow the focus to be on the latest content, or a single story at a time. Well, you can’t get a more one column design than One Column.
As the name suggests, this theme is a single column theme.
It gives more attention to the content area, and the sidebar content is all moved to be at the bottom of the page.
I believe this is good for photo blogs too.
Grab it from WPThemes.info