Simple Photo Responsive
Simple Photo Theme for WordPress is stylish, customizable, simple, and readable. Perfect for any illustrator, designer and blogger.
Simple Photo Responsive by Marios Lublinski
Portfolium
Portfolium is a clean and flexible WordPress grid-based portfolio theme designed in a modern & minimalist style. Portfolium is ideal for designers, artists, photographers, and other creative specialists who require a professional portfolio theme. Portfolium theme is coded in valid CSS and HTML and compatible with all browsers. It supports all WordPress 3.0 features and gives you extra flexibility.
Portfolium by WPSHOWER
Shaken Grid Free
Another kick-ass theme from the guys at Shaken & Stirred Web
Shaken Grid Free by Shaken & Stirred Web