For example, take this photograph: https://monovisions.com/wp-content/uploads/2015/04/10-famous...
There is pure #fff in that photograph, but it's used very sparingly, so the overall picture is still pretty dark.
You are correct, there's very little pure black and white in the photo. Only a handful of pixels.
For example, take this photograph: https://monovisions.com/wp-content/uploads/2015/04/10-famous...
There is pure #fff in that photograph, but it's used very sparingly, so the overall picture is still pretty dark.