I'm looking to get the ideal camera and travel bag/backpack but I don't really know much about what's out there. I've looked at what Kata offers. I wish I can see them in person, but didn't find what I want on their website. Basically, the bag has to do a few things. I have 4 lens. 3 small ones(eg. 50mm prime and one 70~300mm zoom). I use a traditional SLR so I don't have to carry battery packs or electronic accessories. However, I need space for my 35mm negatives. Right now, I have a single-sling shoulder bag which allows me to swing the bag to the front and change lens swiftly, which I do a lot while traveling on foot. The bad thing is, the weight is bad for my shoulder and tires me quickly on hikes. Right now, there's no space for other things like water. I also have to carry my tripod separately. I also would want to take other stuffs with me on flights, like laptop equipments. So it will be ideal if the bag has laptop compartments as well, or the space to store them. So in summary, my idea bag stores both camera and laptop, allows me to access lens compartments easily(and safely!). I love the new Kata bag that changes from backpack to single-sling, but it doesn't take anything else other than the camera gears. Other bags they offer take both laptop and camera, but doesn't seem to accommodate for multiple lens. Again, I have to see it in person to know. Some of them are also really expensive. So if you know of any bag that I should consider, or if you have good experience with yours, please share! Really appreciate your suggestions, thanks!