I'll be hiking in the Adirondacks for 2-3 days. Given my current line-up, what would you carry with you (along with food, shelter and a leash for the dog)? Zooms: Sigma 10-20 Tamron 17-50 Nikon 28-105 Nikon 70-300 VR Primes: Sigma 20mm f/1.8 Nikon 35 f/2 Nikon 50 f/1.8 Part of me wants to travel light with just the 17-50 and 70-300. Another part of me wants to go even lighter with the Sigma 20mm f/1.8 and Nikon 28-105. On the other hand, the thought of leaving the 10-20 behind seems like a decision I may regret . . . What would you take? Please limit your answers to TWO of the listed lenses (OK, maybe 3 if it's a good combo).