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Old July 10th 17, 03:44 PM posted to uk.tech.digital-tv
Roderick Stewart[_3_]
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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
wrote:

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.

Rod.