Repeat after me: content trumps technical quality. Always. We have to work in some of the most hostile and dangerous environments on the planet, so it’s ok if the images you get are not quite perfect, as long as the content is there. So stop pixel-peeping and bump that ISO to 12,800 before the sun rises, use that plastic kit lens or even leave your DSLR home and climb with a point and shoot. As long as you get the shot, this is all that matters.