Hi I dont know if anyone else experiences this but I mainly like to shoot in manual. I find that on quite a few occasions when I pick up the camera to shoot my right thumb accidentally moves the thumb wheel and adjusts the shutter speed by 1/3 stop or so. I find it difficult to "park" my thumb somewhere where it wont touch the thumb-wheel. Obviously not such a problem in one of the auto modes as the exposure still remains correct. This is also an issue if you set up the camera and hand it to someone to take the shot as they often move it as well. It would be nice if the AE lock button would disable the thumb-wheel when selected. The problem is exaggerated in winter when wearing gloves.