This has become totally semantic. I know what the "accepted" terms are. The point is, if you don't assume that I'm mistaken (in my initial statement), it's quite easy to understand what I meant if you step out the darkroom mentality for a moment.
But alas, since this is the internet, it's hard to know if people are using words strangely or are mistaken so I can't blame anyone for making an assumption.
To say that "pull down" & "rein in" mean the opposite of "hold back" just goes to show you how tenuous and knife-edged these distinctions are. They aren't superior or more accurate, they're just tradition.