You just want to change the lens - And already you start fumbling aroung.
A camera case have to fit your photographic needs as well as your camera, lenses, flash and other accessories.
Do you attach importance to security and want to avoid unauthorized access to the equipment? Do you want your equipment in the backpack,
but do not want to have to put down the bag every time you change the lens? Is the tripod always present? Do you perhaps carry things that may not have anything to do with your photographs,
but still occupy space in your bag? How well does the content tolerate a rain shower? And how comfortable is it all?
There are various questions about the photo bag. So choose carefully, because your bag will always be you