Interesting effect

A couple of weeks ago, I took this photo of some trees near the Mirage parking lot as the sun was setting and the sky was a lovely blue.



There are some bright security lights in the parking lot, and the way they lit up the trees and gave them extra contrast against the darkening sky was interesting.

A few days ago, I was playing around with this photo in Photoshop, and for some reason -- don't ask me why, as I can't remember -- I did the following:

-- Selected the image (Command-A)
-- Copied the image (Command-C)
-- Pasted the image (Command-V), which created a new layer
-- Chose "Overlay" as the option in the "Layers/Blending Mode" pop-up menu

... and this was the result:



I was immediately struck by the apparent 3D effect that was created. It reminded me of images from those old "Viewmaster" discs for some reason. I don't know why this operation created this effect, but I must say I like it.-- PL