The other day I picked up a copy of Zack Arias’ OneLight Workshop DVD at the advice of a friend. A few glasses of scotch and some time later, I ended up sending these thoughts to that same friend: Dude, I am at the 15:25 mark of DVD 1 from the OneLight workshop. I must say that this guy is not doing a convincing job of articulating how a camera and flash works. At 4:57, he drilled into us that “shutter speed controls ambient exposure” about 13 times in 60 seconds. This is a reckless oversimplification [as we'll see in a moment] but goddamn it sounds like the gospel the way Zack preaches it. Like Moses himself stumbled upon this bit of wisdom scrawled on a stone tablet [...]