Re: BabelColor PatchTool
Re: BabelColor PatchTool
- Subject: Re: BabelColor PatchTool
- From: Steve Jenkins <email@hidden>
- Date: Mon, 25 Aug 2014 17:57:07 -0400
Ken,
I think you're confusing characterization versus profiling. The data that's uploaded to the monitor, its characteristics, just sets hardware adjustments, like manually twiddling the contrast, brightness and color controls on the monitor. Of course the LUT data has finer granularity than the manual adjustments. So think of the LUT data as automatically twiddling the manual adjustments. Then you create an ICC profile on top of that physical adjustment. Now, theoretically, if you had a monitor that perfectly emulated a standard RGB color space, like sRGB, or aRGB, or even as unlikely as it sounds, ProPhoto, you wouldn't need to profile the monitor. You could just use one of those canned profiles as your display color space. But!!!, since no monitor does this very well, so far, building an ICC provides a closer match between input and output color. So, to make a long story short, as long as your monitor's physical adjustments are matched with a particular ICC profile, the ICC contains all the information about how color will display on that particular output device. Of course the ICC profile must be accurate. I've seen many, and created some myself, awful profiles -- so beware!
HTH - Steve
----- Original Message -----
From: "Ken Fleisher" <email@hidden>
To: "ColorSync Users Mailing List" <email@hidden>
Sent: Monday, August 25, 2014 15:28
Subject: BabelColor PatchTool
> When using BabelColor PatchTool for evaluating profile gamut and monitor
> performance, what exactly is happening when you are using a monitor such as
> an Eizo where the LUTs are uploaded to the monitor?
>
> If I use the Gamut Tools and Display Check, I need to select the
> destination profile. When I select the monitor's profiles (created with
> basICColor Display 5), of course the profile does not actually contain the
> LUTs. So how accurate is the Clip Check in Gamut Tools and the various
> stats that result from a Gamut Check? Is there some other method for
> testing these monitors performance when the profile does not contain all of
> the necessary information?
>
> Thanks.
> Ken
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