When choosing a DSLR camera backpack, the main thing to consider is the size that you will need. You will want to select a bag that is large enough to hold your camera, yet small enough to keep it from moving around inside of the case. Apart from the bag size, you will also need to consider which type of camera bag you want to purchase in time of quality and services.
It is important that your camera bag has padding to protect your camera from banging against narrow canyon walls or accidental falls.
Make sure your camera backpack is not hurting your back. Many backpacks are designed so that your shoulders carry most of the weight. The best backpacks are the ones that distribute the weight of the pack evenly so that your lower back is carrying the weight evenly with your shoulders.
A photographer needs more than just a camera to capture quality pictures. They need a reflector, different lenses, a tripod and even a laptop. To accommodate all these accessories you'll need a bag with room to spare. The bags now come with add-on features like special pockets in different sizes to keep all the accessories safe.
Camera kits are extremely heavy, and all those photographers carrying long lenses and DSLRs know that very well. While a sling bag will put all the weight onto a single shoulder strap, a camera backpack will spread the weight of your kit consistently over your back. It is a must-have for all photographers whose job requires them to travel to many places. To distribute the load and save your back for future adventures, you can opt for camera backpacks with waist support.
All photographers should be prepared to deal with the vagaries of nature. If you're planning to shoot outdoors you must have a camera bag with high-quality waterproof cover. You will find good quality camera bags made from water-resistant fabric online.