I love my Canon G12, and I have had hundreds of pictures published from my 3 mp Olympus D-550. But the other day I got caught in the rain with my G12 (luckily I was able to protect it), but it raised the issue of maybe a weather-resistant carry camera for me. The new Olympus OMD is dust and splash resistant, but bigger than the G12. None of the "prosumer" cameras is weather resistant that I know of. The new Lumix TS4 has some manual controls and a bunch cool toys, but it's a small sensor and 12 mp, which means small pixel pitch. My experience with digitals is limited. The G12 has bigger than point-and-shoot pixel pitch; and I presume the D-550 has big pixels with so few mps. So, the question: what's the smallest sensor you would recommend for decent IQ? Or has so much progress been made at the small end of the scale that it is not so much of an issue?