Hi Please read about...
https://en.wikipedia.org/wiki/Zeiss_formula - the Circle of confusion, Depth of field, Hyperfocal distance and all that...
In there you see attempts to define what should be seen as a sharp "dot" - when the dot is as large as possible.
It boils down to being a dot of such diameter that it makes up 1/30 degree (sin, cos, tan and all that) of view from where you view an image (the distance to the subject). So "it depends", on how large your subject (image, print) details are and from how far you view it.
/Hannu
On 2018-12-15 14:38, FF wrote:
Hello, Could someone explain what criteria define the area of sharp focus? Thanks, Jack. ___________________________________________________________________________ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
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