A Little Bit Nerdy

So, more about the tricks your eyes/brain play on you. Below is a classic example of how difficult it is for the human eye to discern color and tone. The eye is very well equipped to notice differences, but not absolutes. Squares A and B seem to be vastly different shades, but as you can see in the second image, they are exactly the same tone. B seems lighter because it is surrounded by darker squares, and vise versa for square A. Here is a link to the "explanation" by the scientist at MIT, Edward H. Adelson, who created the figure. I say "explanation" because I need the explanation explained to me. This is why I love photography!