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Garnet Campbell
color blindness test
on Feb 27, 2015 at 3:07:48 am

What color is this dress? Some see white and gold , some see black and blue . This is making me doubt any color correction that I have been doing. The correct answer is black and blue... I checked the color values in photoshop. Why are some people seeing white and gold... this is weird?



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David Baud
Re: color blindness test
on Feb 27, 2015 at 4:21:37 am

Hmm, you say black and blue, Photoshop saying?
Here is what I get when creating a color table of this image in Photoshop:



More than a few colors if you ask me...

David Baud
Post & VFX
KOSMOS PRODUCTIONS
Denver - Paris
http://www.kosmos-productions.com



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Garnet Campbell
Re: color blindness test
on Feb 27, 2015 at 4:58:29 am

yes but when you look at the dress you see blue and black right? Some people see white and gold.


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David Baud
Re: color blindness test
on Feb 27, 2015 at 5:10:26 am

No, I see a picture that was taken with a camera that did not have a proper white balance done. Therefore I see kind of bluish in what it is supposed to be white (I think?;-) and brown (different tints) where I am guessing it was supposed to be gold (I think again;-)... I certainly don't see a deep black there.

To be fair I asked my girl and she indeed see black where I see the brownish color... some illusion effects? someone smarter than me will certainly chime in...

David Baud
Post & VFX
KOSMOS PRODUCTIONS
Denver - Paris
http://www.kosmos-productions.com



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Marc Wielage
Re: color blindness test
on Feb 27, 2015 at 10:59:51 am

Ah, question settled by science and WIRED magazine...

http://www.wired.com/2015/02/science-one-agrees-color-dress/

Color temperature is everything. Screw up a shot badly enough, particularly if overexposure and mixed lighting are involved, and nobody will be able to tell what the right colors are.


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Glenn Sakatch
Re: color blindness test
on Feb 27, 2015 at 3:19:03 pm

Are you saying the dress is supposed to be black and blue?
Is this footage coming through a dPx pipeline somehow?

Glenn


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Joseph Owens
Re: color blindness test
on Feb 27, 2015 at 8:36:27 pm

This whole thing is a ridiculous blather-troll that only those who don't understand color temperature shift, metamerism, simultaneous dynamic contrast, or principles of photography might find interesting.

I'm sure Hitler and anti-Obama-ism are also factors.

I see all the colours and I could fix them, too. This is not a color-blindness test, that is what the Ishihara plates are for: http://colorvisiontesting.com/ishihara.htm

At one point, I was going to see if I could make my company logo out of one of these dot-combinations... which would tend to filter out a certain number of problem clients....

jPo

"I always pass on free advice -- its never of any use to me" Oscar Wilde.


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Andy Winter
Re: color blindness test
on Feb 27, 2015 at 10:13:43 pm

the emporer's new clothes ;)


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Garnet Campbell
Re: color blindness test
on Feb 28, 2015 at 12:50:24 am

What does metamerism have to do with this? Or Obama and HItler for that matter?

Metamerism is the property of having repeated segments, as in annelids; a concern of zoology and developmental biology. The chemical property of having the same proportion of atomic components in different arrangements (obsolete, replaced with isomer)


I think its of interest because of that fact that you and your client might be looking at your color grade and be seeing two different things.


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Andy Winter
Re: color blindness test
on Feb 28, 2015 at 11:09:03 am

wtf :)

http://www.colorwiki.com/wiki/Metamerism_Article

obama etc.: its irony i guess!

ps: this has NOTHING to do with color blindness. in
my opinion it is a hoax... and yes, i admit, i do see
a white cloth with golden elements, so shame on
me :)


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Joseph Owens
Re: color blindness test
on Mar 1, 2015 at 4:58:30 pm
Last Edited By Joseph Owens on Mar 1, 2015 at 5:13:21 pm

[Garnet Campbell] "I think its of interest because of that fact that you and your client might be looking at your color grade and be seeing two different things."

After 40 years of working with color, its part of the experience that I can guarantee we are. A skillset tool that a professional colorist needs to work successfully is exactly that -- to take into account all the different perceptions and organic variations present in the client environment. There are individuals who don't see color at all. That was an interesting session.

Personally, I don't care what the initial perception of the dress is --- ultimately my job is to make it what people are generally likely to agree on. The eyedropper sample set pulled in Photoshop is just a bunch of RGB values whether its a dress or not, and kind of makes the case for not banging away on the auto-white balance button.

What is absolutely true is that color is not absolute.

http://www.bbc.co.uk/blogs/legacy/tv/2011/08/horizon.shtml
https://eagereyes.org/blog/2011/you-only-see-colors-you-can-name

The second one is interesting -- scroll down to the video about the "Himba" tribe.
Note -- unfortunately the BBC has bokoed the video everywhere but if you can find the "Horizons" episode, there is a segment where they cannot point out a differently colored dot on a screen that is totally obvious to most viewers.

jPo

"I always pass on free advice -- its never of any use to me" Oscar Wilde.


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