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Canon SX130 with CHDK frimware hack to shoot RAW. Old but good (takes AAs, sharp 300mm equivalent lens, manual mode and long expusures up to 15 seconds). Canon D30 waterproof w/CHDK on the kayak (or the SX130 in a small Pelican case), Sometimes I'll lug my DSLR but only if I have a reason to.
My M43 mirrorless would seemilngly be the best of both worlds, but the battery life sucks for more than day hikes, so I mostly use it for shooting street stuff in the city.
