Artist Jennifer Williams was a country girl, born and raised in Forward. In summers she worked on the 400-acre Triple B Farms nearby.

Now she's a city girl.

"New York seemed like the place to be if you wanted to be an artist in the early 1990s," she says, "and I was lucky to get into college at The Cooper Union." Ever since then her art has been greatly influenced by the architecture, history and transformation of urban landscapes.

Three examples of her photo collages are part of a group show, "Have a Nice Day," on view at Filmmakers Galleries in Oakland. They are composites of images taken in New York that capture both the decay and the revitalization of that city's environment, a place always in flux. But they are made more powerful by their careful and unusual placement, much of it upside down.

Ms. Williams cuts, peels and attaches the vinyl digital photos -- like giant stickers -- to walls, in corners, even on the floor, as they morph into bold new shapes.

As with most site-specific installations, much of the work is done ahead of time. After shooting lots of digital photos she makes shapes with them on her computer, using Photoshop. "I compose the collages on top of a photo of the actual installation space," she explains.

Once she's satisfied with her computer sketch -- a virtual model -- she measures and re-sizes each component for the gallery walls. Using an inkjet printer and Photo Tex, a vinyl paper with sticky backing, she then prints and cuts them out "in real life," says Ms. Williams.

"Have a Nice Day" is the fourth exhibit exchange with the Center for Emerging Visual Artists in Philadelphia. In 2008 Pittsburgh Filmmakers/Pittsburgh Center of the Arts began exchanging exhibits with the Philadelphia center as a way to foster an artistic dialogue between the two cities. Selected work by Pittsburgh artists have traveled to Philadelphia since then, and work by the Career Development Fellows at their center -- such as Ms. Williams -- travels to Pittsburgh.

Featuring an array of media (photography, video, sculpture, painting, installation) by 10 artists, this exhibit runs through Dec. 11. Admission is free. Information: pghfilmmakers.org.