Black & White Films- Look Real Life- Colour Blind?
Discussion
dibbers006 said:
I was under the impression, from chatting to people with the condition, that colours are muted.
How would they know that their perception of colour was muted compared to somebody else? They just lack the ability to distinguish between two colours.Completely lacking the ability to distinguish colour is very rare - see Monochromacy.
However, I doubt even Monochromats see the world in quite the same way as a black and white film. Photographic emulsions are brewed in such a way that their response to different wavelengths of light matches 'normal' vision. There's no guarantee it would match somebody whose retina doesn't have the usual mix of rods and cones, for example. I'd guess somebody who only has rods would perceive a lower contrast version of the world, based on how things appear when dark adapted.
I have red/green/brown colour-blindness although fairly mild as far as I can tell as it's a difficult thing to quantify (lab tests may be able to?).
Even so, I can usually tell the difference between red, green and brown fairly well unless the shades are muted. For example, an apple, a tomato and soil are patently green, red and brown to me but the upholstery of the chair I am currently sitting on could be green or brown to my eyes (but is not red).
However, somewhat strangely, when I was little, my sister and I had matching cups but one was pink and one was blue. The shades were similar and I couldn't tell them apart.
Even more strangely though, I can see variations in shade which people with "normal" colour-sightedness, can't. A relative bought a mix and match suit where the jacket and trousers appeared to be two different colours to me but nobody else could see it. Our kitchen doors are different colours to the frames to me but everyone else sees them as matched.
Does that help???
Even so, I can usually tell the difference between red, green and brown fairly well unless the shades are muted. For example, an apple, a tomato and soil are patently green, red and brown to me but the upholstery of the chair I am currently sitting on could be green or brown to my eyes (but is not red).
However, somewhat strangely, when I was little, my sister and I had matching cups but one was pink and one was blue. The shades were similar and I couldn't tell them apart.
Even more strangely though, I can see variations in shade which people with "normal" colour-sightedness, can't. A relative bought a mix and match suit where the jacket and trousers appeared to be two different colours to me but nobody else could see it. Our kitchen doors are different colours to the frames to me but everyone else sees them as matched.
Does that help???
Heretic - absolutely! Although for ease of use I usually stick to clothes which all "go": Blues, blacks, greys etc - maybe a bit boring but better than going round looking like a pillock 
(No, never done that myself. Nope! Never bought a nasty green jacket. Uh uh. Wasn't me...)
Dibbers - you may well be right, depending on colour / shade, I guess but there are some monsters out there...
(No, never done that myself. Nope! Never bought a nasty green jacket. Uh uh. Wasn't me...)Dibbers - you may well be right, depending on colour / shade, I guess but there are some monsters out there...
dibbers006 said:
I don't know but from the quoted simulation the colours look pretty muted to me.
They look muted in the simulation, yes, but it's not something that I am aware of in real life. To me, I just see "normal" and I guess that goes for every colourblind person. The problems that colourblind people face arise because - using the simulation as an example - as the colours become muted, you'll notice that some previously easily distinguishable colours become difficult to separate from each other.As for the Ishihara plate hiding a secret line, I can't find one. There are plenty of examples online of ones where colour-normal people see one number and colour-blind people see another though.
BuzzLightyear said:
Heretic - absolutely! Although for ease of use I usually stick to clothes which all "go": Blues, blacks, greys etc - maybe a bit boring but better than going round looking like a pillock (No, never done that myself. Nope! Never bought a nasty green jacket. Uh uh. Wasn't me...)
Dibbers - you may well be right, depending on colour / shade, I guess but there are some monsters out there...
When I bought my Isuzu, it had a big pink sticker on the side saying 'Amigo'. I never knew until I went to amazes house. It was promptly removed, and that is why it had PH smileys in its place! I have also never worn some garish concoctions... No siree! (No, never done that myself. Nope! Never bought a nasty green jacket. Uh uh. Wasn't me...)Dibbers - you may well be right, depending on colour / shade, I guess but there are some monsters out there...
TheHeretic said:
The yellow one looks a bit green to me, but the rest are 'obvious' colours. Where I struggle is with things like these.
Aye, those kinds of things are bit of a chew.Do you also get the times when you don't know what colour something is? It's hard to describe, and certainly an odd sensation, but there are times when I simply just don't know.
The Flying Ox said:
Aye, those kinds of things are bit of a chew.
Do you also get the times when you don't know what colour something is? It's hard to describe, and certainly an odd sensation, but there are times when I simply just don't know.
Do you also get the times when you don't know what colour something is? It's hard to describe, and certainly an odd sensation, but there are times when I simply just don't know.
you end up saying, "well, it's a greeny-browny-reddy sort of colour" and the like, headging your bets! The colour I have biggest difficulty is purple.
The way I explain it is that my eyes aren't as sensitive to red. I can see true red just fine, but it won't look as vibrant as it would non colour blind people.
As purple is blue with a touch of red, my eyes don't see the red, and so I see the blue.
That's the simplest issue I have with colour. There are a million and one other circumstances where I have to ask for help. Microsoft replacing a simple colour grid with 50ish colours where a name pops up after hovering the mouse with a full spectrographic pallette and no assistance is a constant source of irritation!
Saying that, I think I've got better with age. Whether that's a learned response based on experience or not I don't know, but I do seem to be able to guess with a greater degree of accuracy.
The way I explain it is that my eyes aren't as sensitive to red. I can see true red just fine, but it won't look as vibrant as it would non colour blind people.
As purple is blue with a touch of red, my eyes don't see the red, and so I see the blue.
That's the simplest issue I have with colour. There are a million and one other circumstances where I have to ask for help. Microsoft replacing a simple colour grid with 50ish colours where a name pops up after hovering the mouse with a full spectrographic pallette and no assistance is a constant source of irritation!
Saying that, I think I've got better with age. Whether that's a learned response based on experience or not I don't know, but I do seem to be able to guess with a greater degree of accuracy.
TheHeretic said:
S6PNJ said:
Here's a picture of how different colour blind people see the different tones etc.
What are they supposed to look like to colour blind people? 
Any clearer?
Gassing Station | Science! | Top of Page | What's New | My Stuff