The idea is that since I have mild deuteranomaly, my M (green) cones are shifted a few nanometers towards the L (red) cones. I also know that many other factors can affect the color perception of people with normal color vision, such as the position of the sun in the sky, weather, hazy, cloudy, etc… So what I’m looking for is a measure of how much the position of the sun would affect the color of an object. I’d bet the bank on the sun shifting light wavelength more than my condition.

I’ve looked into color temperature a bit and found at dusk or dawn sunlight has a color temp of approx. 3200 K and at noon its around 6500 K. My problem is I’ve been unable to relate this change of 3200 K to 6500 K to a change in wavelength (nanometers).

Any information on how much the sun would affect color perception, or how many nanometers a person with mild deuteranomaly would be shifted would be greatly appreciated.

I can be contacted at: bmather9@gmail.com

I posted a question in relation to colour blindness and firefighting duties about 18 months ago or so. I got a response, thank you.

I represented a gentleman who wanted to be a firefighter, passed his initial tests, but discovered during the medical test that he was a deutan.

I assisted him in a complaint of impairment discrimination in the area of employment under the Equal Opportunity Act in Western Australia.

The case was dismissed.

The newslink for this case is this: http://www.watoday.com.au/wa-news/fesa-rejects-colourblind-firefighter-20091111-i8tq.html

(hopefully it’ll still be there by the time anyone reads this post).

The actual decision (which is more interesting, from a legal point of view) can be found at: http://decisions.justice.wa.gov.au/SAT/SATdcsn.nsf

The reference of this decision is: VAN DER KOOIJ and FIRE AND EMERGENCY SERVICES AUTHORITY OF WESTERN AUSTRALIA [2009] WASAT 221

Regards,

Jeff the Perthian