Re: Does anyone know how Harry Gruyaert produces his color images?
chiron wrote:
I'm not sure what an "unshared mask" is--say more.
I liked your illustration--it does get at some of what he does. What did you do to the second image, if you don't mind saying?
I enjoyed your take on his work.
“Unshared mask” is…
… a typo! I meant UNSHARP mask. (I suspect that autocorrect may have changed it.)
Unsharp mask is an old technique that was used a lot in the film darkroom. Basically you would create an “unsharp” version of your negative — a blurred version — and layer it with the normal, sharp negative. This creates some extra contrast around boundaries between different luminosity levels. If you think of a line between gray and almost-white areas, around that boundary it would make the white whiter and the gray darker, even black. It is sort of like a large radius, high amount sharpening setting.
I actually used a version of that in my second image. That’s not all I did, but it probably has the biggest effect. It also increases the saturation of colors and expands the overall dynamic range a bit. I also steepened a luminosity curve so that the image goes rom pure black to near pure white and I added a slight s-curve to that curve. I also increased the saturation i level using a couple of techniques.
Aug 14, 2025 at 01:17 PM
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