ellis CORY wrote: > > It was good of Gary to resurrect my old question, times have moved on from > then and I have gained a lot of useful information. After all, 'meaningless' > is in the eye of the beholder ! and for the purposes I required, eveything I > have found out is 'meaningful. > For those interested AVERAGE values are: > Cornea to retina 24mm > Lens dia. 9mm > Light sensitive Rods (black and white) 400+ASA > High light sensitivity, low resolution > Cones (colour) 25 ASA > Low light sensitivity, high resolution > Normally sensitive to yellow/green light during the day > blue/green at night. > Acute vision angle 15 deg.
Ellis, Actually you are slightly wrong. For colours the official vision angle is 10 deg. If interested in details, look here: http://colour.derby.ac.uk/colour/info/glossary/c/CIE1964Observer.html taco
