I'm going to a 2 weeks photo trip in Guizhou & Hunan, and will be mostly moving on foot most of the day. I'm looking for a lightweight tele, mostly for landscapes (i will mostly use wider lenses). I do currently have a 70-200 VRI and a 135DC, which are nice for portraits and shooting wide open but not so much for carrying all day and shooting landscapes.
I do just need something light and that is ok at >F8.
I was thinking at Tamron or Nikon's stabilized 70-300, or to go all the way to some 28-300-ish lens, but i have no idea of the real value of these lenses.
PS : just upgraded from D700 to D800.
Anybody has some advice?