MTC Photography Posted September 7, 2020 Share Posted September 7, 2020 For years I have tried to find a mathematical formular for Hurt & Driffield curve to no avail for instance Link to comment Share on other sites More sharing options...
MTC Photography Posted September 7, 2020 Author Share Posted September 7, 2020 (edited) After playing around with hypergeometric curves, I finally find a function with resembles closely the Hurt & Driffield curve. The H&D curve consists of three part, the toe, the linear part and the shoulder. The toe is the dart part of film, where the curve is flat, meaning that there is very little detail. The should is the hight light of film, where also detains are lost For a good picture, try to keed the image withing the linear part, that means avoid strong highligt and avoid too dark scenes Edited September 7, 2020 by MTC Photography Link to comment Share on other sites More sharing options...
MTC Photography Posted September 7, 2020 Author Share Posted September 7, 2020 Reference: Tai Huai Ching Introduction to photography, Sin Jew Jit Poh Publishing House, Singapire Link to comment Share on other sites More sharing options...
MTC Photography Posted September 7, 2020 Author Share Posted September 7, 2020 HD curve with photographic terms Link to comment Share on other sites More sharing options...
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