There are two basic questions I want answered:
1) What is the DR of the human eye at any given moment, and how does that DR vary with the lighting, and
2) What is the total DR of the human eye, from the lowest to the brightest, giving the eye time to adjust to differening light levels.
I would like to know *how* you know this information. One website I found gives and answer to the quesiton:
but I'd like to know how these figures were arrived at.