What are you up to Saturday afternoon? If you're not sure yet, we've got the answer: the opening of City At Large: Photographs of San Francisco.

Twelve photographers, many of whom you've probably seen on the pages of SFist, have assembled a great outdoor photo exhibit of over 30 huge prints in the parking lot of Adolph Gasser Photo (181 Second Street).

According to photographer Troy Holden, "the prints were made cheaply on the oversize engineering copy machine at FedEx Office for $9 each. The prints were then wheat pasted to the parking lot walls to ensure they'll stay up for several months."

The photos, as you can see. focus on "candid moments seen while walking around the City," Holden says, from photographers like Chris Beale, Brian Brophy, Reynaldo Cayetano, Jr., Brandon Doran, Troy Holden, Bhautik Joshi, Suzan Kaplan, Doc Pop, David Root, Tiffany Sainz, Oscar Santos, and Brian Sorensen.

Saturday's the show's opening, from 2-5 p.m. "It's free and open to the public," Holden says. "Just come into the parking lot and take a look at the photos."