strand600X Posted April 4, 2008 Share Posted April 4, 2008 HiDoes anyone have the lee conversion chart so that I can give an RGB device either a DMX value or percentage to get a lee colour out of it? Thanx bAz :( Link to comment Share on other sites More sharing options...
Chubbs the Techie Posted April 4, 2008 Share Posted April 4, 2008 Trawl through this topic from not so long ago. There are some links in there! Charlie Link to comment Share on other sites More sharing options...
steve h Posted April 4, 2008 Share Posted April 4, 2008 I've been looking for something like this as well. The nearest I got was getting a CMY chart (paulears keeps posting one every so often when this topic comes up) and the RBG is the reverse. ie. If Cyan is 100 then Red will be 155, Magenta 50, then Green will be 205 and if Yellow is 200 then Green will be 55. This is a good starting point, I often find my blue value has to be halved, but this will depend on what lights you are using. I use this to get me close and then go by eye! Steve edit: the paulears link is here Link to comment Share on other sites More sharing options...
strand600X Posted April 4, 2008 Author Share Posted April 4, 2008 Thanx CharlieIts a very handy topic. It's about CMY and I need RGB. I'm probably been stupid but are they the same or different? CheersbAz A concurrent post has been automatically merged from this point on. I've been looking for something like this as well. The nearest I got was getting a CMY chart (paulears keeps posting one every so often when this topic comes up) and the RBG is the reverse. ie. If Cyan is 100 then Red will be 155, Magenta 50, then Green will be 205 and if Yellow is 200 then Green will be 55. Thanx SteveAt least its a startBaz Link to comment Share on other sites More sharing options...
Oovis Posted April 4, 2008 Share Posted April 4, 2008 I've been looking for something like this as well. The nearest I got was getting a CMY chart (paulears keeps posting one every so often when this topic comes up) and the RBG is the reverse. ie. If Cyan is 100 then Red will be 155, Magenta 50, then Green will be 205 and if Yellow is 200 then Green will be 55. :( Maybe I'm tired but I didn't understand anything after Cyan is 100... ;) Edit: Ah, after a few reads and playing with GrandMA OnPC, I get it. I fell over the phrasing of the reply trying to work out why Red would be 100, Magenta 50 and Green 205 if Cyan was 100. And I missed the point you are using DMX values, not percent. Sorry. Move along, nothing to see here...... Link to comment Share on other sites More sharing options...
Ekij Posted April 4, 2008 Share Posted April 4, 2008 To answer the OPs original quetsion ... "No"Not all Rs are the same intensity or frequency of Red, same for Green and Blue thererfore there is no exact translation.The best you can hope for is something that gets you close but having to modify the value by hand is common. Significient tweeking (especially of Blue) may be necessary depending on your particular RGB source. Link to comment Share on other sites More sharing options...
strand600X Posted April 4, 2008 Author Share Posted April 4, 2008 Thank you everyone. I shall start with the CMY and take it from there.bAz Link to comment Share on other sites More sharing options...
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