On Wed, 23 Jan 2019 at 18:22, Normand Fortier <[email protected]>
wrote:

> I am creating test images in order to get a better grasp on soft
> proofing for printing. These images simply contain patches of different
> shades of gray. I created them using Inkscape and then exported to png
> (see appended image).
>
> For example, in the upper left group:
> 24 -> (29,29,28)
> 25 -> (29,30,29)
> 26 -> (30,30,29)
> 27 -> (31,31,30)
> 28 -> (31,32,31)
> 29 -> (32,33,32)
> 30 -> (33,34,33)
>

I get essentially the same values as you with sRGB as the input color
profile, but if I change it to Adobe RGB I get essentially the correct
values (sometimes +/- 1).  What colorspace was the image saved in?

Jim

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