Here’s the link from 485:
https://thesocietypages.org/socimages/2008/10/24/what-does-black-and-white-look-like-anyway/
The photos in the link below don’t use, or need to use, image-blending technology. They simply show two near-identical faces, un-retouched, non-photoshopped:
https://thesocietypages.org/socimages/2008/10/24/what-does-black-and-white-look-like-anyway/