I remember this article from a few years ago about a tetrachromat artist. https://concettaantico.com/ https://concettaantico.com/ https://www.theguardian.com/

I remember this article from a few years ago about a tetrachromat artist. https://concettaantico.com/ https://concettaantico.com/ https://www.theguardian.com/society/2022/jan/30/im-really-just-high-on-life-and-beauty-the-woman-who-can-see-100-million-colours https://www.theguardian.com/society/2022/jan/30/im-really-ju... https://munsell.com/color-blog/tetrachromat-artist-concetta-antico/ https://munsell.com/color-blog/tetrachromat-artist-concetta-... Many flowers have patterns only visible in ultraviolet. Many pollinators can see ultraviolet and these patterns on the flower direct them to the pollination areas. https://en.wikipedia.org/wiki/UV_coloration_in_flowers https://en.wikipedia.org/wiki/UV_coloration_in_flowers http://www.naturfotograf.com/UV_ANGE_SYL.html http://www.naturfotograf.com/UV_ANGE_SYL.html The lens in our eye filters out a lot of UV. After Monet had cataract surgery his color perception changed so his later paintings have a different color balance. https://jamanetwork.com/journals/jamaophthalmology/fullarticle/418859 https://jamanetwork.com/journals/jamaophthalmology/fullartic...