I'd just like to add another recommendation to others for f-stop backpacks. I have the Satori and love it. For weddings I can pack my main camera, 5 lenses, 5 flashes, and all the accessories like cards and batteries and a snack. I can also strap 3 light stands to the outside of it. For backcountry camping trips I bought the smaller ICU to put my camera, wide angle lens, and pano tripod head inside. The rest of the pack can be filled with food, clothes, rain jacket, etc and I can strap my tripod, tent, and sleeping bag and pad to the outside.