Hi Nick,
Go to Google Maps and search for Wolf Camera near that location. The big camera shops are not really in that area. (Central, Helix, Calumet)
If you feel like taking a walk a mile or two south, Central Camera is my favorite, it is at 232 S Wabash, one block West of Michigan Ave, just north of Jackson.
Walk down Michicagan Ave, and there are a lot of opportunities for an out-of-towner. Grant Park, Millenium Park, Watertower, Art Institute, etc. A little further south, right on the lake is Aquarium, Field Museum, and Soldier Field.
That will occupy you for at least a few days.
The University of Chicago campus is one of my favorite places in the city. It's further south, in Hyde Park and has GREAT architecture. I wouldn't go there at night though. 😉
Chinatown is also interesting, there's a CTA train that goes right there, but I forget which line it is.
Outside of Chicago, there is NOTHING going on for at least 50-100 miles in any direction. The landscape here is boring, unless you like subdivisions or cornfields.
Consider going to your local Borders or Barnes & Noble and buying a Chicago fast map and/or travel guide to really do it right. Definitely get the FastMap though. It's an easy city to navigate, as it is based on a grid, with only a few diagonal streets. Renting a bicycle would be a good way to see things; you could ride the bike path right along Lake Michigan.