Le 05/09/2016 à 13:47, KOVÁCS István a écrit : > Hi, > > If I get this correctly, the card has grey patches as well as colour ones.
no, only grey (and blck/white, but I don't really use them): http://www.scuadra.fr/en/charte.php?Language=en it's mostly for WB > The spot white balance tool adjusts white balance only, meaning that: > - after adjustments, grey should be grey (neutral) but it's practically impossible to produce materials with exact neutral grey as standardized in photo. Hence, each grey card gives accurate Lab values measured by spectrophotometer, so I tried to find a quick way to adjust the WB based on those values. > - exposure is to be done independently of course. > - colour in non-grey patches, as well as the lightness of all patches > are influenced by the camera profile. See darktable's documentation on > that topic. > right, but it seems would be welcome to adjust the spot WB measure using Lab values if we know them maybe? > Of course I may have misunderstood something. > me too ;) ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
