My DSLR is the Nikon d5100. There is ample room for the body and mounted 18-55mm as well as an unmounted 55-200 mm, another small camera body, and the Nikon charger. The partitions are easily moved to allow various configurations to compartment size,
It will fit. I have a Canon 60D and have put a 200 and a 150 lens on it with a hood and it fits just fine. You can carry 4 other lenses (nothing really long like a 500), batteries, chargers, and tons of stuff in it as well. I love this pack.