Hi.

On Wed, Jun 3, 2015 at 9:02 PM, Christophe Vescovi <
[email protected]> wrote:

> After a long time without upgrading my system, I have gone from DT 1.4.2
> to DT 1.6.6.
> I have noticed a problem with the Tone Curve Tool, that create very bad
> purple color zone even when set completly flat.
>
> You can see an example image here :
> http://chris.stingray.free.fr/tmp/dt_purple.png
>
Most likely, it will be gone if you set gamut clipping (in input color
profile) to “linear Rec2020 RGB”
https://www.darktable.org/usermanual/ch03s04s03.html.php#input_color_profile



>
> The raw is from a Sony Nex 6.
>
> I have tried the unstable ppa (I am using Ubuntu) and the problem is the
> same.
>
> Since the Tone curve is quite a basic tool, I am very surprised to see
> this "bug".
>

> Regards,
> Chris
>
Roman.


>
>
>
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