odl5006093 wrote an answer about DAKINE Mission Photo Backpack - 1500cu in on February 24, 2012
I used this bag in Rome. I had all my camera equipment in it and it started raining really hard, so I put the rain fly over the bag. It kept the entire bag and my back completely dry.
It's a great bag. Plenty of compartments and space for cameras and other stuff.
What I love most are the small details, like the elastic bands that cinch up the extra strap length that usually hang down.
The only thing I didn't like about it is the zipper tabs are actually quite noisy. I removed a bunch of them because they make a jangling sound when you walk with the bag on.