"Keep your ISO low to avoid introducing noise." Is this the most misleading, harmful advice in photography? (I could make a similar argument for videography, but I'll save that for another day.)
I understand the sentiment, of course. Carelessly cranking the sensitivity isn't the most efficient way to exploit the exposure triangle. However, in dispensing this advice, I think we've demonized a) the ISO setting in general and b) the presence of grain in our images.
