[EviLToYLeT]

Ok I'm pretty sure this has been posted before, but can't find it in search. Just wondering if there are any of you who know the effects of color blindness (... hehe forgot which two colors i am.. like blue n green or some oddball combo) on an artist. Does it mess up his ability to pair colors etc?

Anyway, just want the scoop on how color blindness may affect art. thanks.

[Ben Barker]

You're probably red/green. Red/green deficiency is the most common form of color blindness, and occurs in something like 1 out of 10 men (to some extent). Might be 1 out of 20, I'm not sure.

[burn0ut]

There was a guy who was colorblind that used to post here months back, He was really good, with pencil anyways, his Tones where awesome..
i forget his name tho :/

[chalker]

Long time ago , I had the URL of a website, in which you could type an URL in the adressbar in the page. And this page converted the images and colors of your URL into how a colorblind person it would see.
And showed the page.

I forgot the URL, but if you search in google i am sure you find it .

[Zorglub]

I'm color blind. And not just like two colors but a range of colors. I don't know about other color blind people, but it does affect my painting. I esspecialy have problems making the colors that I imagine. For example I think I want to paint the sky blue (obviously) but I paint it purple. I'm still trying to find out how to work around this problem.

[Blind]

I'm the 1 out of 20 men who are red/green color blind. Do a search on the net for daltonic, the condition it's known as, named after John Dalton the physicist.

So far as I know, it doesn't affect me at all. It's just that I see something different than you see. We both look at an apple and we both call it red, but if you could yank out my eyes and look through them, you'd say it looked more like another color. See? >8)

------------------
- Blind
[email protected]
Clan Shred Company

[This message has been edited by Blind (edited February 07, 2001).]

[Dean Welsh]

here Ya go! http://www.colorfield.com/insight.html

I love posting that.

-Dean

[strata]

Excuse me for saying this, but I find the tritan colors really beautiful =)

I wonder how people with the tritan deficiency see the pics with the tritan colors tho... if it gets even more odd

------------------
Quantum materiae materietur marmota monax si marmota monax materiam possit materiari?

[pierre]

As far as I know about the percentage of people, in the western world, that has this anomalia in their vision is about a bit below 10 percent of the men, and I think less than one percent among women. (therefor there is no use putting on that much make up girls, 10 percent of the men will not notice it anyways , just kidding)

The reason of the differences in the genders lies in the fact that the error lies in the X cromosome, which we get from our mother, and guys only have one of, while girls have two. Therefor a girl will only suffer from some form of color blindness only if both of her X cromosomes has color vision error. Tha does not happen to often.

There are several form of color blindness and the site clearly takes them up.

Color blindness can ofcourse also be caused by medicines used wrongly, accidents etc...i.e. not necessarily lie in DNA structures.

We have RODS and CONES in our retina. While the RODS are abscent in the center of our retina they are many more than the CONES, which are positioned only on a very tiny area in the center of our retina.

The RODS, can only detect light intensity, not color, and they are only used in very dark conditions. They are extremely sensitive, even when hitted by a relatively small amount of photons. Ever woke up in the middle of the night, turned on the light, and feeling an irritation in your eyes just from a simple light bulb. That is the sensitive RODS being drained of the rhodopsin liquid that they are contained of. The rhodopsin gets drained very quickly and therefor the irritation goes away and they eyes go back to using their CONES only in light sufficient environments.

The CONES, which there are three of (in humans), detects color. Each one of the three cones detects a special part of the spectrum. They work almost exactly as the RGB (Red Green Blue) channels on your monitor.

The most common form of color blindness lies in some error or difference in the CONES compared to the CONES in th bulk of the humans.

One very, very rare form of color blindness is cause by the total abscense of the CONES and hence is total color blind. The person can only see black and white and have other problems as well due to the natural function and positioning of the RODS.

Other forms are more common and the site talks about them. There can either be an abscense of the CONES, some of them or a REORIENTATION of the spectrum sensitivity of one or several of the CONES.

The most common form of color blindness is Red-Green anomalia. The problem most often lies in the fact that the R- and G-CONE spectrum sensitivity curves are pretty much fused together in relation to a normal condition (this condition was normal, but about 40 000 years back in the evolution, when those two cones started to part) The fusion makes the curves sensitive to a very similar spectrum and therefor generate a smaller degree of color contrast and hence fewer color combinations. The result is that:

1) The green part of the spectrum, which even normally is covered by all three CONES, will be covered by an unwanted degree of the R-CONE, and hence generate a more "greyish" color compared to the normal green. But it will also be more yellow in its tone because we all know that the R and G channel generates yellow. So I believe that the result will be a degree of a somewhat olive green color.

2. The red part of the spectrum will be covered with and unwanted degree of the G-CONE, which will cause the red to get a more yellowish tone. There will be an abscense of the "magenta" tone color since the G-CONE will interfere with the R-CONE.

3. The intensity of the Green-yellow-orange-red part of the spectrum will be more tight and more intense (brighter). Hence there will be a difference in brightness between normal and anomlia conditions. Some colors will appear brighter and others darker compared to a normal condition.

Ofcourse the B-CONE can alos differ in its covering of the spectrum, but that is very rare.

These are some of the effects that differences in the cones can generate it should be noted that another form of the same Red Green color blindness is not caused because of the above mentioned fusion of the cones, but another form of fusion caused by the R- and G-CONE to be blowed up and cover its normal part of the spectrum AND the part that should not be covered. That form causes pretty much the same color vision difficulties, BUT increases the sensitivity in detecting light. One could say that such a person would be able to recognize more steps in values (grayscale, from white to green) than a normal person which would normally be able to distinguish some two or three hundred steps. Sometimes more.

There has been cases when physicians have been able to clearly look at the world of a color blind person. Some people have been color blind on only one eye and that has been invaluable for looking into the world of just another way of seeing our beautiful world.

And if someone is wondering, YES, I am pretty damn sure: Our world is as beautiful in the eyes of a "color blind" (I don't like that way of putting it) person as it is in our's.

Pierre

P.S. Those color dot boards used to test color vision are very misleading. They exaggerate the persons anomalia, but nevertheless, they are useful to detecting an error, which most often is a small one.

[EviLToYLeT]

Thanks for the answers guys. HEhe, guess colorblindness does affect me a lot. But hey, I don't really notice it.... except I call borderline purples grays etc. etc. etc.