If you have a backpack, then your camera will likely sit loose in the main pocket.
This certainly isn’t ideal, as the device will move and slide around, especially if you’re doing a challenging hike.
This puts the camera at risk of being scratched, or worse.
To prevent this from happening, it’s best that you seek out a dedicated camera bag.
The camera bag is designed to shelter a camera not only from moving around, but also from the elements.