How to Turn Off the Countdown or Flash in Photo Booth

The “flash” in Apple’s Photo Booth, where the whole screen goes bright white to ‘improve’ your webcam pictures (it usually doesn’t), can be pretty annoying to me, especially when trying to take a photo like this. Thankfully, a little searching around found me this fix from MacSupport.ca, which also shows how, with a single key, to also disable the 3-2-1 countdown on a photo-by-photo basis.

The most important one: