LowePro FreeLine BP 350 AW: LowePro's bag has a compact size that makes it great for short day trips or photo walks around town. It will hold a 15-inch laptop and your camera can be easily accessed through the side pockets.
Manfrotto Advanced BeFree Backpack III: This Manfrotto backpack is a solid option for an affordable backpack that can hold a camera body along with a few lenses. It's not particularly comfortable, but for short trips, it will do the job well.
MindShift BackLight 26L: MindShift's BackLight is a great all-around backpack for jumping into the hills with your camera gear. It's comfortable, well-made, and its back fully opens to reveal a substantial interior that will easily hold a camera and additional lenses and accessories.
Toxic Valkyrie: Made by respected tripod manufacturer Three Legged Thing, the Toxic Valkyrie bag is roomy, fully modular, and features a cutout pocket to store wet items while keeping your camera gear dry.
LowePro Photosport 55L: Looks like a regular hiking backpack, LowePro's PhotoSport 55L is ideally suited for photographers who want to hike deep into the mountains with their camera. It is generous in its size, providing space for your camera, tent, sleeping bag and everything else you need for your outdoor adventure.
F-Stop Kashmir: The F-Stop Kashmir is an especially lightweight photo backpack that uses different sized camera inserts to allow you to adjust the layout according to the amount of photo gear you need to carry. Its light weight makes it comfortable to carry on all-day hikes.
Thule Covert 32L: Thule's covert backpack has a modestly sized compartment for a small mirrorless camera and an extra lens, with an expandable top that gives plenty of room to tuck in a jacket. It is a comfortable and quite stylish option for urban photographers.
Nomatic Pete McKinnon Pack: The Nomatic Pete McKinnon Photography Pack is sturdy, comfortable to carry and large enough to hold a huge amount of photo gear for location photography. It's a great option if you need to take a lot of lenses on a rough and ready trip.
Nomatic Pete McKinnon Backpack: The smaller version of the Nomatic Pete McKinnon Pack, the backpack is made from the same extremely durable, rubberized materials and has a generous interior that can be adjusted. It's a great option if you don't need to carry as much gear.
Hawkesmill St James Messenger: With its custom hardware, genuine leather and Scottish-made canvas, the Hawkesmill messenger bag is a beautiful blend of luxury and practicality.