I have always found interesting Lab info at this website...look around various pages and you might find your answer... http://www.brucelindbloom.com/index.html?LabGamutDisplayHelp.html Doug Schafer

I expected this to be under Dan's post. It isn't on my screen.

I couldn't get my head round this working as John wanted. It will do something but not quite what John described. I had thought of it as a possible solution. When the conversion is made to sRGB the

One approach that may be interesting and is more graphical and qualitative as opposed to quantitative, spreadsheet manipulation is the following…. Start with a full Lab image (for example, make a

That’s ok, I couldn’t understand what your project was about and frankly still don’t see the point of it. But, this is a shortcoming on my part and I thank you for the additional information in

I’m not sure there’s a basis for that statement. The file may be in LAB and it may contain “colors” that are outside the gamut of (say) sRGB but the monitor that displays the LAB file is an

If you are working with video then there is some serious processing to do due to frame rate and the final sample size. Wow what fun:-) The reconstruction of the OoG image will then really be

Strangely it is the kind of thing I love doing, so ask away. You will notice there are lots of resources, a colorwiki and a forum, I guess others will be interested in your idea and be able to offer

Joe -- did you try ironing the newspaper article before you scanned it? Iron it on low in between two sheets of plain paper or newsprint if you have it. (heat only, no steam!) That will make it at

Respectfully, I don't understand this comment. While I understand that I am coming in from the left field somewhat, but I hope that my question comes across as valid within this group. I am trying

Your last sentence is a doozy. I believe the answer to where out of gamut colors go is: ‘away’ as in gone - but the numerical Lab values could be kept for reference in a duplicate of the Lab

Thank you Rex, this is a extremely helpful. I didn't know about CTP, but have just downloaded a demo now and it looks fascinating. If it's ok with you I may come back with a couple of questions when I

If I understand correctly you have an image/graphic etc in Lab and you want to remove colours that are in Gamut for sRGB leaving the OoG colours available to you in some form. Interesting idea. Any

Hi, I am curious about what happens to out of gamut colours during an Lab - to RGB conversion - where do they go and is there a way to keep this information? As I understand it, when a L*a*b image is

As the Latins said: “Repetita iuvant”… Thank you so much Dan!

I select 4 parts and do a dust and scratches filter at 100 Radius  and 9 Threshold. (it reads D&S on Dan Margulis panel) Hector Davila

Ok, but you could lost the scree using FFT, do an easier retouch without cloning dots, and then rescreen it if you wanted dots again jc

Dust and Scratches filter

Please would you clarify what 'extreme d&s' is? I suspect it's something I should already know but I can't, for the life of me, think what it is. Phil Lamerton

Hi Joe, I have seen several high end tools that are designed to descreen. Mostly designed to convert scans of printed books back into print ready PDF