What I mean by the title is when you're in Manual mode and you meter a scene or subject, you get the needle pointing at zero or +/- away from it. Lets assume for this that we want the needle on zero without any purposeful over or under exposure. With that said, what is the allowable amount of +/- you personally allow before adjusting settings? I ask this because small hand movements cause the needle to adjust slightly and I want to get a idea from other photographers at what I can ignore and when I should change settings. It is obvious that drastic changes need a correction. However I did some test shots with +1 stop, 0 and -1 stop and it isn't something I can't correct using RAW and post production, save for the possibility of detail lost in the blacks on underexposure.
I want to feel/get more comfortable and stop chimping so much. Of course if I expose to the right I feel the need to chimp because I'm worried I'll clip some whites. Does this go away with experience or is it just a part of photography?