Dan Margulis (born 21 December 1951) is an expert on color correction and reproduction of photographs, using Adobe Photoshop or similar software.
The work of Margulis is associated with the concept that digital color correction should seek to correspond to what a human observer would see if placed in the position of the camera.
He popularized, but did not originate, a method he described as "color by the numbers", which requires the retoucher to verify that certain values in the digital file agree with known standards.
In 2020, Margulis released a new translation, with substantial supporting material and graphics, of the classic 1839 text On the Law of Simultaneous Contrast of Colors by M.E.
[15] He was the 2023 recipient of the Progress Award, the highest honor given by the Photographic Society of America, recognizing “a person who has made an outstanding contribution to the progress of photography or an allied subject.” In the United States, his small-group, hands-on courses in these subjects were sponsored by Sterling Ledet & Associates, Inc.[16] In Europe, he has taught in German, Italian, Spanish and English.