iris in
Advanced (C1)formal
make the picture close into a circle
"At the end of the silent-film parody, the image irised in until only the actor's face remained."
Hear it in context

Stung by the World's Largest Carpenter Bee!
Brave Wilderness Top Videos · 10:26
I got iris in my eyes.

First Look: You Can’t Keep Hannah & Iris Separated | Love Island: Beyond the Villa
Peacock · 1:55
Are you trying too pussy say sorry to Iris in person?

Conway's IRIS and the windscreen wiper theorem
Mathologer · 1:56
a proof which involves the IRIS in the title of this video.

Conway's IRIS and the windscreen wiper theorem
Mathologer · 0:07
You are here for the mysterious IRIS in the thumbnail, aren’t you?