Iain is looking for photos in a particular pose.
So maybe you didn’t like the Blasphemy Challenge; this is a much more restrained exercise in which the fellow is going to collect photos of people holding an apple if they accept the evidence for biological evolution, or holding a light bulb if they believe in that evidence-free creationism stuff, and they’ll be strung together into an animated video. It’s easy, and I figure I’ll do it this week (with an apple, of course).
Watch the video, he explains exactly how to compose the picture, and he has a lovely accent, too.