RE: Humans (and cameras and scanners) do not have a color gamut (?)

14 Jan 2020

      Thanks!

From: Rich Wagner <Rich@WildNaturePhotos.com> 
Sent: Monday, January 13, 2020 6:07 PM
To: colorsync-users@lists.apple.com
Cc: Wayne Bretl <waynebretl@cox.net>
Subject: Re: Humans (and cameras and scanners) do not have a color gamut (?)

On Jan 13, 2020, at 5:12 PM, Wayne Bretl <waynebretl@cox.net <mailto:waynebretl@cox.net> > wrote:

I'm puzzled as to why no one has constructed a five-wavelength anomaloscope to research tetrachromacy. It seems to me that red, yellow, green, cyan, and blue LEDs are available that could be used in such a device.

Great question!  While genetic testing shows the potential for tetrachromacy, the proof is in the functional studies.

TETRACHROMATIC COLOR VISION 

http://www.imbs.uci.edu/~kjameson/jamesonOUP3.pdf

The Veridicality of Color: A case study of potential human tetrachromacy. 

https://www.imbs.uci.edu/research/MBS14-02.pdf

Genetic testing: Participant CA was color vision genotype assessed in 2012 by an independent research laboratory which stated CA has the genes for retinal tetrachromacy. Specifically, CA’s gene sequence for long-wavelength (L-) sensitive type cells shows an Exon 3 codon 180 polymorphism in the nucleotide sequence of her L-cone opsin gene electropherogram (personal communication from Concetta Antico, May 28, 2014). CA’s genotype results are at http:// concettaantico.com/scientific-details/ <http://concettaantico.com/scientific-details/> . CA was featured in a Fuji Television Documentary entitled “Science Mysteries” that aired in June 2013 (see http://www.youtube.com/watch? v=D9Eamc4JV9A). Future genetic analyses will confirm or qualify these results, and explore additional photopigment opsin allelic variations CA may possess. 