The Wrap recently spoke with The Batman cinematographer Greig Fraser. Note are spoilers in the article, but this is what Greg had to say in response to the camera test with Rob in the Batsuit:
I’m also curious about the camera tests with the Batsuit and figuring out how to lens it. I know someone has said – and maybe it was you — the two hardest things to light are the Batsuit and the Darth Vader helmet, and you’ve done both.
Yeah, I said that. I told Robert that. I think I said it to him apologetically as I was adjusting an eye light a millimeter at a time. And the poor guy standing there with this big leather suit on. So I think I felt really bad, having to say, “Hey man, I’m so sorry. I really want to see your eyes.” But it’s tricky because getting the light into the eyes, yet not putting too much on the cowl, is the balance. It’s a really hard balance to strike because when you over-light the cowl — I mean, listen, it’s a beautiful costume, of course. But if you over-light that cowl, it can lose some of the power, you know? It can lose some of its menace, and it doesn’t then feel like it’s servicing that story as well.