I bought this bag there now three years old and he followed me in my travels.
There is a place for the camera, and up to two additional targets.
There are some additional storage (cards, documents, a small storage to put a flash and a pocket on top to place battery charger, somewhere suns, memory cards etc.)
The only downside to this bag would be at the shoulder.
Indeed, the maintenance is correct in the back but the shoulder is torn at the top (shoulder joint to the bag) and I think that despite good repair sewing will relax. This can be quite a shame if the bag came to fall for a loose seam ...
It is true that I can switch on her bag while having an optimal security side was a big plus for me but nevertheless weaken the seams with time)
So if you must make a choice, opt for a classic backpack (without strap) !!!
There is the same model as this one in classic format
Really do not hesitate, I'm glad to bag as he very well protect my property during the excursions and it is comfortable for long walks!
good luck in your future choice!