DaiDactylos

Every actor in 'Still Wakes the Deep'. I don't usually like that type of game - you don't really have a great deal of agency, you can't fight only run, there are sudden deaths in some sections - but the overall atmosphere, the design, and that perfect voice casting drew me in. I think it's still on Game Pass if you want to see and hear it for yourselves.

Looks like a means of detecting how far the phone is from an object, then calculating the depth of field adjustment needed to supply the "right" amount of background blurring, making the object stand out in the resulting image. Good for making portrait subjects stand out from their surroundings, for example.