On Mon, Jan 21, 2019, at 01:28, Stéphane Gourichon wrote:
> A cheap and easy way to get an a good dark region in a scene is to take an
> archive cardboard box with one hole. I can't find a reference now so I write
> here my own analysis of why it works so well.
There's some discussion about that here:
http://www.imatest.com/docs/veilingglare/#target
--
jys
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