There is going to be a photography exhibit and talk of interest at the Cherrydale Library in Arlington. Scott Speck specializes in pinhole photography. Take a look at his website!
http://www.scottspeck.com/index.html
I think the exhibit will be some of his landscapes, but he is giving a talk, too. The reception is Saturday, April 11 from 1-3PM. His talk is at 2:00.
Cherrydale Library
2190 Military Rd
Arlington, VA 22207