MORE FROM PAGE - 3 JUNE 2012
Color - Lower Antelope Canyon, AZ, File #1230108
Link To Original Image
Slot canyons are full of subtle color. Unfortunately, in my ways the mind adjusts what our eyes perceive so that the colors are more muted. For example, if you've ever taken photos at high altitude, at the top of mountains you'll notice a decidedly blue tinge to your images. That's be cause the color blue has been less detracted at high altitude than near sea level. It's easy to see in images but you mind doesn't see it. Why? Because of the most powerful computer processor you've ever seen, your brain.
You brain has an idea what the colors are supposed to be kind of like the auto white balance setting on your camera, and makes adjustments. If you're patient, you can see the blue if you look. You sort of have to "will it" into view.
In our slot canyon case, the colors are much more red than what's seen. The challenge your eyes and brain have to deal with are the very large dynamic range between the brightest and darkest scenes. Not only that, you eyes need time to adjust to the darkest scenes. As a result, the colors seen by your retina are different than what's seen by your camera. It's very interesting stuff.
More of this in the next while.