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Why you can't take a good picture of a rainbow

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There's a mismatch between the sensitivity of colour pixels in a digital camera sensor and the sensitivity of colour sensing cells in the human eye. We don't normally notice until we try to take a picture of the whole visible spectrum (like in a rainbow!). For example if you take a picture of a rainbow with a goPro Hero 7 violet disappears!

I also talk about how computer screens can show violet even though the pixels only go as far as blue.

Here's my video about how cones cells work:


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Видео Why you can't take a good picture of a rainbow канала Steve Mould
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19 сентября 2019 г. 22:00:04