I've been checking out some of the pics that people are asking critiques for...while I am learning so much by doing this, there is something that has me confused. Sometimes people will say that the image should be sharper....other times it's not an issue. Some say too grainy, others say no it's fine. Other than the obvious issue of a pic being totally out of focus....is the 'sharpness' and/or "graininess" of a picture just personal taste, or are there "rules" (as such) to follow?? I've been taking mostly pics of flowers and landscapes. I'm getting a real kick out of having close-up, super sharp photos!! I've even caught a few bees and a dragonfly in some of the pics---the wings at close range are very cool!! Any answers for me???? ...Thanks so much!!