I bought the LowePro Nature Trekker AW II mainly because I wanted something that would allow me to lug ALL my gear around including the Sigma Bigma (50-500mm).
Needless to say, there's very few times when I'd want to carry this 10Kg (
1stone 8lbs) backpack around with me, but when you feel that you can't bear to leave anything behind, it's perfect!
Normally I use a Tamrac Expedition-4 which is a great backpack but cannot accommodate the Bigma. I'd
love to find a small case which would hold just my D300 with the Bigma attached. Anyone know of one?