Solved pink acrylic?

Bree · Apr 8, 2022

if you want to test your own colour perception, then the Farnsworth Munsell 100 Hue Test is a good way to do that. There's a simplified online version of it here:

Farnsworth Munsell 100 Hue Test

Farnsworth-Munsell 100-hue test helps you to detect your color vision deficiency. You have to arrange all colored slides sequentially.

www.colorblindnesstest.org

The full 100 colour test used to be available online, but that required Flash to run it. If you still have Flash you can get it here. And if not, you can download the .swf and use one of the many swf2exe converters to make it into a .exe.

Farnsworth-Munsell 100 HueColor Vision Test – Colblindor

www.color-blindness.com

swf2exe

Download swf2exe for free. swf2exe is an application that allows one to generate a stand alone executable to display swf (Flash) files. Various options will be possible (windowed, transparent...).

sourceforge.net

FJRMarty · Apr 8, 2022

I use a not-very-expensive HP 24mh external monitor. Took those Farnsworth-Munsell and Ishihara and Cambridge tests, got them all correct.
Nice monitor!
And yes, bobkn, I still see pink Windows trim. I'm switching to dark mode for a bit. :)

bobkn · Apr 8, 2022

The thread seems to be getting more attention than I expected.

I find that I don't understand how to run the calibration. I have used different adjustments to the RBG gains to get the white point to come out properly. The delta E values for one attempt were good, but I think that I got a magenta cast for some pastels. (It's probably not pink.) With the latest try, the background of this forum is a pale blue. I'll need to do more study to find whether I'm doing it right.

bobkn · Apr 8, 2022

Haydon said:
(snip)

@cereberus You may be a bit color blind, there are simple colorimeters that can help you choose colors and color combinations for your clothing, preventing you from wearing an odd color combination, for example. The alternative is to have a wardrobe that is all shades of grey :)

In the US, it's spelled gray.

The late Fred Rogers was colorblind. He relied on his wife to keep from wearing the same color cardigan in back-to-back shows of "Mr. Rogers' Neighborhood".

Haydon · Apr 8, 2022

@bobkn you should calibrate your eyes to technology, NOT the other way around, because your/our eyes are VERY unreliable in this regard, your color perception changes from before to after lunch, changes from you looking forward to sideways, changes from the color of your monitor bezel to its width, etc. I can't explain this any further, though. Best is to plough through the links, 'further readings', standards documents, etc. There is only so much that can be conveyed in simple forum posting of this VERY broad and deep subject matter.

gray - Wiktionary, the free dictionary

en.wiktionary.org

grey - Wiktionary, the free dictionary

en.wiktionary.org

Winuser · Apr 8, 2022

Haydon said:
@bobkn you should calibrate your eyes to technology, NOT the other way around

How does one calibrate their eyes?

Haydon · Apr 8, 2022

Winuser said:
How does one calibrate their eyes?

By understanding that our eyes are not as precise as a colorimeter in this regard, just as understanding that our eyes are not as precise as a ruler in that regard. In other words, take the colorimeter or the ruler to calibrate your eyes via that kind of understanding (and do that even if your eyes appear to tell you something different)

Edit: I am done with this topic, though. I find myself giving answers that are more and more obvious to more and more people, and at some point, someone is going to feel offended

TraderGary · Apr 8, 2022

Haydon said:
By understanding that our eyes are not as precise as a colorimeter in this regard, just as understanding that our eyes are not as precise as a ruler in that regard. In other words, take the colorimeter or the ruler to calibrate your eyes via that kind of understanding (and do that even if your eyes appear to tell you something different)

Edit: I am done with this topic, though. I find myself giving answers that are more and more obvious to more and more people, and at some point, someone is going to feel offended

Ah, so don't believe yer lyin' eyes! :ROFLMAO:

bobkn · Apr 8, 2022

Haydon said:
By understanding that our eyes are not as precise as a colorimeter in this regard, just as understanding that our eyes are not as precise as a ruler in that regard. In other words, take the colorimeter or the ruler to calibrate your eyes via that kind of understanding (and do that even if your eyes appear to tell you something different)

Edit: I am done with this topic, though. I find myself giving answers that are more and more obvious to more and more people, and at some point, someone is going to feel offended

I'm missing your point.

I've used not one, but two, similar colorimeters. (X-Rite i1Display Pro and the Display Pro Plus). With the DisplayCal software, and Calibrite ccProfiler (formerly i1Profiler). I've gotten good white points. Sadly, I have also had considerable variation in the pastels (like in the background of this page). The variable seems to be the settings I use in the monitor's RGB gains, to get the proper white point.

I also have access to a spectrophotometer, but I haven't compared that yet. Unfortunately, it is not supported by DisplayCal, which seems to be superior to the Calbrite software (but a bit harder to use).

At the moment, I think I'm fairly close. The background is light blue, and the bar with my avatar is a very pale gray, without any magenta cast. (The text area is white.)

My goal is to calibrate the monitor for still photography. I may not have chosen the best monitor for that purpose, but it (Asus PA329c) was about the cheapest 32" true 10bit (not 8+2 FRC) monitor I found.

Winuser · Apr 8, 2022

Haydon said:
By understanding that our eyes are not as precise as a colorimeter in this regard, just as understanding that our eyes are not as precise as a ruler in that regard. In other words, take the colorimeter or the ruler to calibrate your eyes via that kind of understanding (and do that even if your eyes appear to tell your something different)

We see colors as our eyes see or don't see the colors. I for one don't have any way of calibrating my eyes to see colors in any other way.

Haydon · Apr 8, 2022

TraderGary said:
Ah, so don't believe yer lyin' eyes!

It's more like seeing reality with your physical eyes AND your mind's eye.

@bobkn Let the literature be your guide, not us/me here. I seem to remember you posted you are an engineer?

bobkn · Apr 8, 2022

Haydon said:
It's more like seeing reality with your physical eyes AND your mind's eye.

@bobkn Let the literature be your guide, not us/me here. I seem to remember you posted you are an engineer?

If you're claiming that what I was seeing was a subjective or psychophysical thing, you are mistaken. It was something I noticed because of a change in the appearance of the forum, due to a monitor calibration issue.

I probably should have taken snapshots with a smartphone to illustrate it, but I didn't think of that at the time. I'm not going to change the calibration yet again to restore the tints.

I'm a retired optical engineer. Color theory was never part of my study or work, though. Just a little radiometry and photometry.

Incidentally, I just ran the DisplayCal verification with the second colorimeter. Everything was OK except for the white point, and that wasn't very far outside the recommended tolerance.

Haydon · Apr 9, 2022

You confused my two responses as one.

In any case, whatever your remaining issue is, would it not be more purposeful to consult the pertinent literature?

bobkn · Apr 9, 2022

Haydon said:
You confused my two responses as one.

In any case, whatever your remaining issue is, would it not be more purposeful to consult the pertinent literature?

I haven't followed your links. Unless they are specific to the software and colorimeters I used, I doubt their immediate relevance to what I'm seeing. I am not looking for a primer on color theory. I have a fairly good idea what a colorimeter is, and how it differs from a spectrophotometer.

Haydon · Apr 9, 2022

OK, your choice

Solved pink acrylic?

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