I just put up a post concerning 4 shoulder bags I'm looking at to go with my new camera.
As I was going to check the price of each of those, a couple backpack style camera bags caught my eye (Tamrac 5273, Lowepro Pro Runner 200W, etc.).
I've always carried a shoulder bag and never really considered a backpack style bag.
What are the advantages and disadvantages of a backpack style camera bag?
Thank you for your help.
BTW: I'll be carrying a Canon T2i with 18-55mm lens, 55-250mm lens, 50mm lens, EX420 flash, small HD Video Camera, and Extra Supplies (battery, memory, cleaning, etc.)