This is exactly the backpack I've been looking for. The camera I use is 10" long with the lens and hood. This fits with a little extra room through the side pocket of this bag. I've been using a sling bag, but I have to angle the lens up, and I'm always nervous that I won't grab it right and it'll fall out when I go to retrieve it. This bag solves that problem, and gives me a lot more peace of mind. I also found that I can use the dividers to give it a slight angle so the body sits up a bit for even easier grabbing. I started with the small divider and made a small speed bump to sit it on, but then I graduated to the larger divider. I made a ramp with it, and the lens just glides right into place. It feels better than any other bag I've ever used.It has plenty of options for dividing it the way you want, or you could leave it completely open and use it as a large padded container. The dividers feels nice and stiff, and they hold the shape I make very well.The padding on the back is a firm gel. It's okay, but it does allow for the air channels to stay open so my back doesn't get sweaty. It's fairly well protected, but it also comes with a rain cover. I found that it's reversible in the event I don't want to advertise what I have in the bag.The flap on top is extra security as this bag can fully unzip to have easy access to all your gear. The flap loops onto hooks in the middle of the backpack. If there's anything I would change, it's those hooks, as I never liked the way they operate. It's a small gripe as I just don't use them, and the other features of the bag heavily outweigh that little issue.The overall quality of the materials and stitching is extremely good. Even the top handle feels more substantial than other bags I've used.Overall a fantastic bag.Highly recommended.