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High-contrast black and white image of a forest with tall trees and dappled sunlight.

I’ve been messing about with the simplest ImageMagick scripts again. 

magick  "$file"  -threshold 25% -fill white +opaque black  "${file%.*}bw25.gif"

Sort of thing. Changing the threshold repeatedly. A few more on Flickr. I am not sure why I like these but I do.

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