Are You Colour Blind?

Carrigman

Like 12% to 20% of the white male population I am Red/Green colour blind.It doesn't mean I can't see those colours. It's just that I don't see them to the same intensity as non-colour blind people, especially when they are in combination. (Last year my son and I were walking throught the Killarney National Park. He pointed out some Red Deer in the undergrowth. If I was there still I don't think I could see them). It hasn't affected my photography in any way as far as I know. Still, it might be useful to know so why not test yourself here:

http://www.toledo-bend.com/colorblind/Ishihara.html

City-Exile

I'm normal!
Thank heavens some part of me works properly!

robh71

Interesting.....I think
The very last test entitled 'Another Interesting colour blindness test is below'..I cant see any number really, definitely not a 5 or a 2 anyway!

What does that make me.....

Carrigman wrote:

Like 12% to 20% of the white male population I am Red/Green colour blind.It doesn't mean I can't see those colours. It's just that I don't see them to the same intensity as non-colour blind people, especially when they are in combination. (Last year my son and I were walking throught the Killarney National Park. He pointed out some Red Deer in the undergrowth. If I was there still I don't think I could see them). It hasn't affected my photography in any way as far as I know. Still, it might be useful to know so why not test yourself here:

http://www.toledo-bend.com/colorblind/Ishihara.html

Ruu_Old

Normal. I've done tests like these with the Human Performance and Perception lab at the local university. I will try and find some of the tests online.

DonkeyStyle \o/

Nope, not colour blind... just myopic

rahtkennades

Well, I don't think I've ever been called 'normal' before. There's a first time for everything!

Thirdfox

I'm fine...but I have suspicions about my father...

Cabaal

I appear to be fine.....phew

soccerc

Apart from being blind I can see all the numbers.

Normal? me? never.

irishcrazyhorse

Im good

ThOnda

Is white a colour? Is black a colour? So I am not colourblind (so far)!

Thirdfox

White is every colour combined and black is the absence of colour... so white is a colour and black isn't afaik.

ThOnda

Both white and black are only tones of gray. White is 0% gray and black is 100% gray.
I'm just joking. That was atetmp to very old joke from times of BW TVs :-)

Thirdfox

Lol, I see - I'm a gen X baby "They used to have black and white TVs? - What happens when they show snooker?" - they had the word "blue" over the blue ball right?

I thought black is what you see when 100% of the light hitting a surface is absorbed into the surface i.e. black hole

Surely black isn't 100% gray...what would gray be then (50% gray?)

ThOnda

Grey used for metering in photography is so called "18%" grey.

You can find description on the web or in some books. I have passed only two exams from electrical light subject at university

digitally-yours

i am fine !!! yoooooopie !

rymus

I should show that to my boss tomorrow to wreck his head... he's colour blind in the worst way possible

ThOnda

You mean "traffic lights" blind? He rides on red? :-)

Thirdfox

ThOnda wrote:

Grey used for metering in photography is so called "18%" grey.

You can find description on the web or in some books. I have passed only two exams from electrical light subject at university

Therein lies the problem - I only do physics...

see excerpt here:
http://www.city.ac.uk/colourgroup/faq.html
Could you please settle our argument over whether black is a colour or not. Please reply soon before we fall out and hurt each other - Two bored Observers
Answer: You're both right: depending on which side of the perception/physics fence you're on!
In terms of Perception, Black like Greys and White, is an achromatic colour: a colour without hue and saturation (or "strength").
If the term is intended to be Physical (physical and psychophysical concepts are often confused) and Black refers to a total absence of visible radiation (light) then, if there is no physical stimulus, there can be no physiological response: no response-> no perception-> no colour.

http://en.wikipedia.org/wiki/Color
Opaque objects that do not reflect specularly (which tend to have rough surfaces) have their color determined by which wavelengths of light they scatter more and which they scatter less (with the light that is not scattered being absorbed). If objects scatter all wavelengths, they appear white. If they absorb all wavelengths, they appear black.


And apparently 18% might only be 12%?
http://www.bythom.com/graycards.htm
"Light meters are calibrated at the factory using ANSI standards. The standard has always been for a luminance value that is roughly equivalent to the reflectance of 12% gray."

conzy

I can still be a bomb defusal guy! or an electrician

rymus

ThOnda wrote:

You mean "traffic lights" blind? He rides on red? :-)

He's always said that he only knows to stop at traffic lights when the light on top is slightly greyer than the rest of them

Eirebear

I'm normal...well at least my eyesight is.
This has all made me want to go and watch little miss sunshine

odonnell

as colourblind as a colourblind bat apparently. I often humour elven with comforting stories at how her husband used to be quite a brilliant artist before choosing Architecture - until one day hours were spent sketching an object....an owl i think it was. Hours gone in, the thing was life-like and ready for painting up.

Evidently I like my owls green....and so architecture was chosen over art school.

Days driving in the heather are a laugh because of the years we have been together and lived in the countryside etc im sure she can remember pointing out the lovely colour on the heather ....whilst im scrunching up my face and saying "what? where!?"

Hehe....aaw its all good fun sure.

positron

I had to look twice to spot that number 6... other numbers were all really obvious. Slightly color blind may be?

odonnell

nah mate id say youre grand - in general anyone who is red-green CB will struggle to the point of seeing nothing rather than looking twice.

for example - the only circle i could actually see ANYTHING in was the number 25. The others were complete gibberish to me.

mtracey

Yep, red/green colour blind and its a pain in the butt.
Can't readily see colour casts on photos. Autumn! Whats the story with that
I'm told that there are lots of hues and stuff, but I can't see it.

Thats why i stick to b+w

Roen

Try read this article, should solve your woes

http://www.nicholsonprints.com/Articles/colorblind.htm

Spyral

I can still be a bomb defusal guy! or an electrician
__________________

I can't I wear glasses ! and I honestly would **LOVE** to be an EOD technician

odonnell

CB doesnt rule out professions all on its own, fortunately - the military and police etc, use a grading system, usually between 1-4 iirc, then perform a test called a Wright-Lantern test to test your ability to distinguish colours (as opposed to perception, which is another thing entirely). If youre grade 1 and pass the lantern test i think youre good to go. Anything above 2 and youre a pen pusher

jlang

Those tests always tell me I'm colourblind, but I have never noticed any situation in which it affected my colour perception or life in any way.

My bigger problem is distinguishing colours of clothes, particularly women's clothes - mauve, lilac, plum, etc. What's wrong with purple and reddish purple and pinky purple and bluey purple ...?

311

I passed that test ,but I see colours differently to others sometimes.

I call something peach ,when others call it pink. Purples ,blues seem different to me aswell. I must be an odd ball.:D

unreggd

normalage for me