Summary: This sack was exactly what I wanted, it accomodates the equipment that I have with some space to spare. I am very pleased with the innovative and easy method of opening; especially useful when it's not that easy or too muddy to put the bag on the ground. It is comfortable to wear with plenty of adjustment on the straps and the quality of construction is high a good deal of thought has been put into the choice of lightweight materials and the general design.
Pros: Adjustable Harness, Comfortable, Easily Accessible Equipment, Strong Construction
Summary: I needed a lightweight, compact backpack that would take my Canon 5D Mark III with battery grip plus 24-70mm L lens (Mark I) and two other lens, e.g. 70-200mm L, 100mm L Macro, as well as memory cards, spare batteries, etc.This does the job just perfectly. It's soooo light empty and even with some or all of the above it's just a joy to carry, so much so that I almost forget it's there!
Pros: Adjustable Harness, Comfortable, Easily Accessible Equipment, Roomy, Strong Construction
Summary: I use this to transport a gh2, a gh3 and 6 lenses, and other paraphernalia (eg 2 chargers, ipad mini, tripod etc) to shoots. I recently took in on as hand luggage and that worked fine. If I had one complaint it would be that it could do with a couple more zipped pockets-especially one for sd cards.