o.k. my g7 canon housing buttons are sticking bad. I'll try to disassemble and lube but on my last trip I missed some nice photos (in focus) on my last trip despite having a focus light and strobe. I also have to keep putting "shoe goo" on the ISO wheel as otherwise it does not have enough grip to turn the camera wheel. I know some of the out of focus shots are operator error but are the g10 and g11 appreciably better at focusing than the g7? Maybe the larger screen will help me determine if I have a focused shot at the time. Any hints or tips are appreciated. Thanks.