Is there a name for the light that passes through a lens and does not make it to the capture medium (sensor, film, other)?
I'm looking for the name of the grey area in the following image from post How does a circular lens produce rectangular shots?
I've searched for the name of what this is called and can not find the answer. I guess this would be similar to overscan on a TV, and sort of the opposite of what causes vignetting in a photo.