My son, John and daughter-in-law, P.J. shoot Canon, My wife, KatBird shoots Minolta and I shoot Nikon. That is the biggest bag that LowePro makes. When I ordered it at Southerlands Camera, I was asked to make sure that that was what I wanted. They said a small guy ordered one and when it came in, he loaded the bag and put the shoulder straps on and fell backwards then didn't want it. It has two external bags. One I use for a tool bag, red light, etc and the other is for cleaning gear.
Here is how it looks in the truck with my tripod,Strobe frame system flash frame, with the front of my BusHawk shoulder stock showing under the bag.