never to old to learn
You are never to old to learn, if you want to. At my tender age of three score plus I am still learning photography because I want to. Over the last year I learned to use high and higher ISO speeds and I still have to consult the authoritative works to see what the experts say just to ensure that I am doing the correct things and to fine tune that photographic process. But I sometimes wonder if it is necessary to consult with the "experts" when you have already established some rules based on your practical results. The making of a successful end product. Well if I have time later I will consult not just for knowledge sake, but there might be some hints, tips and tricks that I could top off and sweeten this high ISO photographic cake with. Coming from the days of film we know what high ISO is all about, notwithstanding the experimental work done on dilute developer and fast films back then. Kodak even developed a 3200 ISO film and chemicals, which produced very good result