-
Welcome to the new forums! Please read this first. For known issues we are working to resolve, click here.
Color management study for print and monitor
- Thread starter hahah1
- Start date
technoid
Senior Member
If you are interested in a deep dive, www.color.org for technical docs and papers on color management. It's the website of the ICC standards organization with lots of details.
technoid
Senior Member
Lot of good stuff at that site but there are a few areas they need to clean up regarding color management. They should stop showing an icon of a monitor and calling it a "Characterized Input Device."
And they show a u'v' gamut and call it a "Standardized Profile Connection Space." ICC profiles allow for two profile connection spaces. XYZ and ICCLAB, not u'v'. They do correctly state that u'v' was designed to be more perceptually linear that xy but the ICC Profile Connection color space doesn't use it. L*a*b* is the most commonly used PCS for printer profiles.
see: www.color.org
Also, this is wrong. Saturation Intent has nothing at all to do with dithering.
Another use for saturation intent is to avoid visible dithering when printing computer graphics on inkjet printers. Some dithering may be unavoidable as inkjet printers never have an ink to match every color, however saturation intent can minimize those cases where dithering is sparse because the color is very close to being pure.
They have a lot of good info in other areas and some in color management but really should clean up their color management stuff.
What they sell, or don't sell is unrelated to how accurate their info is.
Unfortunately, it is related. A notable portion of those who sell color management services give explanations that dive into the most technical points, that lack distinction between important and secondary, and that appear designed to bully people into doubt and fear.
Somewhat analogous to dentists who take one look in your mouth and become alarmed at imminent periodontal disaster.
technoid
Senior Member
Perhaps. Any business that sells to a specific market is typically interested in providing accurate information to it to facilitate the use of their products. Take Adobe, in spite of occasional bugs, they do a decent job of continually improving their products as well as providing good technical info.
Speaking of Adobe, the Cambridgeincolor site also incorrectly states that black point compensation can be extended to Relative Colorimetric and Absolute Colorimetric Intents to prevent dark shadow clipping mentioning Photoshop amongst others. It can't be used (grayed out) in Absolute Colorimetric. As an aside, Adobe is the one that came up with Black Point Compensation and the ICC incorporated it's algorithm in their publications.
There is, of course, a natural tendency for any business to get good at and focus on their area of expertise/skill. Usually that's a good thing. But, of course, there's a big wide world of color (such as Color Appearance Models) outside the field of ICC profiles and color management though they are fundamental to constructing this wider world.
Michael Fryd
Forum Pro
Some have gone as far as creating additional accounts here so they can provide "third party" recommendations.
Before you follow someone's recommendation, take a look to see who they are and if they have a financial motive one way or the other.
If they won't tell you who they are, maybe it's because they have something to hide (maybe they are promoting their own services, maybe they are work for one of the companies mentioned, maybe they receive free products/services from one of the companies).
-Michael Fryd
www.michaelfryd.com
Possible Conflict of Interest Disclaimer: Many years ago Adobe used to recommend my training services to some of their large clients for training on a few Adobe products. While not paid by Adobe, I was paid quite well for the courses I taught. Additionally. I received a free copy of Illustrator version 1 as a thank you for help I provided the Illustrator development team. I haven't received any special treatment from Adobe in over a decade. I am now subject to the same pricing as other members of the general public.
That site contains misinformation not only on the topic of color management but also on what they call "camera exposure". Have a read - https://www.cambridgeincolour.com/tutorials/camera-exposure.htm
Their explanation of noise is often wrong and mostly confused, https://www.cambridgeincolour.com/tutorials/image-noise.htm
Too little of good stuff, too much of bad stuff.
That is unforgivable.
Last edited:
Keyboard shortcuts
- f
- Forum