I am using it for a canon eos 5d mark camera full frame. The camera without lens will go in the regular camera pouch. With the lens I put it in the interior pouch and carry a smaller extra lense in the other pouch. I really like the sling. So much so that I have ordered a second to carry my back up canon and an extra lense. It is not huge and it is really light weight. The price is good compared to a smaller one I had stolen that cost 3x times as much.