Knees are shot, so backpacking is not in my current list of activities, but for years I packed with a fairly simple kit:
- Ricoh XR7
- Pentax-M 50/1.7
- Tamron 70-150/3.5 (20A)
- Tamron 28/2.5 (03B)
Everything in the kit was compact and I used the two rigid leather-clad cases that came with the Tamron lenses. They fit nicely into the side pockets of the pack for easy access and did very well in that role. In fact, I still have those cases and they still look pretty good. I still have all three lenses and they also look good and function as they did when new. The key was that there were only three lenses and one was always on the camera.
Modern lenses are a little problematic in that they tend to be less compact and may have a few more "thingies" like switches and motors and huge plastic hoods, and stuff. Modern packs are similarly problematic in that they tend to simply be big bags. Still, though, I currently pack even my newer lenses in their soft cases loose in my day pack padded by clothing. For the view camera kit, I use plastic left-over containers for the lenses and pack the body in a zip-front padded lunch bag.
I guess my philosophy has been that if something happens to the pack (usually attached to your's truly) that is violent enough to hurt my photo gear, it is unlikely that I will survive to express my grief at the loss.
Steve
(...really like the rigid Bakelite screw-lid cases that my Soviet rangefinder lenses came in...)