Pre-restoration photo of the Presidio Theatre in the Presidio of San Francisco.

Panoramic photo of downtown San Francisco by night from the end of Pier 14.

Fog sweeps in over Twin Peaks in San Francisco.

Some kind of epiphyte hanging out on a tree in the Presidio of San Francisco.

Photo of steam from the Watercress Line over the British countryside.

Photo of a moth taken with a Lytro light field camera.

Photos of the USS Hornet taken with a Lytro light field camera.

Photo of downtown San Francisco under a lot of clouds taken from Alameda.

From The Museum of Mathematics at Discovery Days (AT&T Park).

Playing with Lytro (light field camera). A tree in Bernal Heights Park, San Francisco.