Hi, all --
First, let me describe my situation: I do not have a big lens yet; my longest is the 100-400. But it is likely I will get a big lens in the near future (maybe the Sigma 120-300 OS, maybe a Canon 300 /2.8).
Also that photography is not my only concern. I often go hiking (~10 miles or more) and have to carry water, food, etc. I usually use a Tamrac holster style bag to carry a DSLR + 100-400 (sans the hood). This just fits the holster bag and it is nice because I can easily access the camera -- I can take it out and start shooting in less than a second. This is important because when you are in the mountains unexpected situations do arise.
I carry a backup DSLR + 1 or 2 lenses, accessories, sometimes a tripod, and food, water and trail guide in a backpack.
Now, if I have a big lens, how would I carry it? I can of course put it in my backpack, but to take it down, get the camera, shoot, put it back seems very cumbersome to me. I do not think there is any holster-style bag that will fit a DSLR + a big lens, right?
Please share your experience.