I never fancy carrying my heavy DSLR gear and lenses on the bike. I do have a pocket camera (Canon G11) that fits nicely in a saddlebag along with a few other bits and pieces.
If I were to carry my DSLR and a few lenses I'd look at either customising some panniers or just dealing with carrying a backpack.
How much gear are you looking to carry (size of camera, number and size of lenses etc)?