Now, I'm no professional photographer, but I do own a Canon 30D with a 200mm Tamron lens, a 50mm lens, a 35mm Canon A1 film camera with a lens on it, and two other lenses for it as well. This backpack holds all of them perfectly with extra space for my film autowinder, extra rolls of film, and other extra little gear like tripod attachments, camera straps, and remotes. This thing is incredible. I got this backpack because I was tired of having camera equipment lying around because it wouldn't fit in my smaller bag. I wanted to be able to store everything in one spot and be able to know where everything is. I also wanted a backpack I can grow into, so I needed one with extra space for when I upgrade my camera body and buy additional lenses. This has everything and more.I had spinal fusion surgery a little under 5 years ago to correct scoliosis and I have 15 of my vertebrae fused. Ever since then, finding a backpack that doesn't cause me serious amounts of back pain has been a challenge, which sucks because I'm an avid hiker and carry heavy gear on those hikes. Because of the ability to adjust the tops of the straps on the backpack, as well as there being a chest strap and waist belt, I can have my backpack fully loaded, weighing well over 15 pounds, and I get zero back pain. Everything is fully adjustible, which is a dream. I also get a lot of neck pain because it is pretty much the only part of my spine I can move and bend, and there is always a lot of tension there. The included caribiner straps on the shoulder straps are amazing! I hook my film camera to it and it takes the weight off of my neck, which eliminates the need for a strap for it all together. I never would have thought of ever wanting something like that, but it was such a smart move.The laptop pocket is a little bit cramped when fully loaded, even for my 13 inch 2022 Macbook Air, which is already pretty slim, however I love the secrecy of where it's located and how to access it. The extra storage compartments within the backpack are amazing too, I keep extra Canon A1 batteries, film, and my CF card reader in those compartments.Though I haven't traveled with it just yet, I can already tell it will replace my regular backpack on more hiking centric trips. I can put both my film and digital cameras in the bottom compartment, and remove the top padding to put toiletries, clothes, and other electronic items in there. I think it would be too big to put under the seat on a plane, however it might on a bigger plane. If you're American, I definitely recommend having TSA pre-check so you don't have to unload this entire bag on the conveyer belt when in the security line, haha.The tripod slots on the side are incredibly smart. You can either put the legs into the cup holder itself, or there's a little pouch that comes out of the waist belt that can also hold the tripod legs. There are three ways of strapping it in that way, one clip strap at the top, and two adjustible ones at the middle and bottom. If you configure it correctly, you could also fit a gimble, gorilla pod, and even a drone on the side of this backpack. This configuration is on both sides of the backpack too, which is great if you want a gimble and a tripod, or a tripod and a drone, or anything you can think of.I haven't needed the extra waist bag, but it can hold an additional camera body plus a lens or two in it. It's great if you need the space, but I think it's a little bit extra for what I need the backpack for.Overall, this backpack is amazing quality and has amazing back support. I anticipate having no issues traveling with this, and it hold all of my equipment and then some. I highly recommend it for the photographer hobbyist, avid nature photographer, professionals, or anybody who just loves a good backpack (myself included). I didn't know a hybrid hiking / camera bag existed, but now I can reserve my 15L hiking backpack, with no padding for my camera (which I would literally just throw in there with a hoodie around it as padding), as a camping bag and just use this, which will keep my camera protected from myself and the elements. This thing also comes with a rain cover to make it fully waterproof. If you are considering other bags as an option, don't. You won't find anything better than this.