this bag is great for carrying your dslr camera and all the 'junk' that goes with it. i currently have our Canon xsi, 18-55 lens, 50 lens, 75-300 lens, two boxes of filters, lens hoods, fish-eye adapter, remote shutter release, plus all the accessories that come with the camera. and i still have room.
we first took this bag with us to the beach. it was perfect because we had our bikes and we were able to get to remote areas of the beach and still comfortable take our camera. so were able to easily get some shots that otherwise wouldn't have happened. plus with the interior bag, i wasn't worried about sand. and sure enough, we had no problems. the strap on the back was perfect for the tripod and the rain cover gives you that extra feeling of safety. i also the water bottle pocket to be very convenient. the extra pockets for perfect for packing stuff for the trip and also for putting extra stuff you might need for a photo-shoot.
all and all, i think this is a great camera bag. it is big, but it's comfortable to carry and looks cool. Even if you don't have a big camera (or any camera) this bag is a great bag!