I used to pack a Nikon Ftn with generally three lenses, add the climbing gear in and it all added up but then I was young. I bought a Nixon P7100 a few years ago and it has logged a lot of shots over the past few years. The P7XXX series is a serious pro camera (I am sure those other guys have equal kit) and really delivers the goods in a small package. The camera is just the tool you use to take the picture. The photographer is the critical element. It works well for me anyway.