The colour-perception wars

Blue and black or white and gold? Maybe this will explain it.


No, I don’t mean race. Although that does bring to mind Woody Allen’s quip that people will always find something to fight about (HT Meenakshi for this line).

There’s this picture of a woman in a dress doing the rounds, and apparently starting huge arguments. People are freaking out, and what not.


Here’s something I haven’t seen suggested anywhere else: try a pinhole camera. Take a piece of paper (it works best if the piece of paper is thick and opaque). Punch a small hole–an actual pinhole is likely too small; try a paper-punch.

I see black and blue. Which I assumed was because of the lighting. So as I figure, using a pinhole should take away effects of the lighting and show up the ‘true’ colours in the picture. So what I expected when I tried this was that I would see hints of gold and white. Which happened.

But wait! There’s a twist. If my explanation above is right, people who see white and gold unaided should continue to see white and gold through a pinhole. This is NOT what happens, apparently (admittedly I only have an anecdote to go by). Why don’t you try it and tell me?

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