View Single Post
Old July 10th 17, 02:44 PM posted to
Roderick Stewart[_3_]
external usenet poster
Posts: 2,246
Default an easy way to share files and a strange thing in a BBC programme

On Mon, 10 Jul 2017 14:04:26 +0100, Bill Wright

How do they achieve a shallow depth of field in bright sunshine? Neutral
density filters stacked in front of the lens?

Yes. Exactly that.
Some cameras have them in a filter wheel between the lens and the
image sensor, but they can be augmented by extra filters in front.