On Saturday, 30 June 2018 19:11:37 BST Marco wrote:
> Hi,
>
> I have a question regarding profiling with an it8 target and
> darktable-chart.
>
> What I've done so far:
>
> - captured it8 reference images
> - corrected exposure to match patch GS0
> - corrected black point to match patch GS23
> - corrected white balance to patch GS5 ← LAB_L > 0 && min(LAB_A² +
> LAB_B²)
> - exported to PFM (float) with Lab profile
>
> Then in darktable-chart:
>
> source image tab:
>
> image: exported_image.pfm
> chart: /usr/share/color/argyll/ref/it8.cht
>
> reference values tab:
>
> mode: cie/it8 file
> reference it8: ??
>
> This is where I got stuck. The reference should be the file R123456.txt
> shipped with the target, right? Selecting it doesn't work,
> darktable-chart doesn't accept it. I only found tutorials using a jpeg
> as reference. But if I understand correctly, it should be possible to
> match the supplied reference values. But how? Or do I need to convert
> the R123456.txt file somehow? Any pointers appreciated.
>
> darktable 2.4.4
>
> Marco
> ____________________________________________________________________________
> darktable user mailing list
> to unsubscribe send a mail to [email protected]
Hi Marco you have to rename your reference file to a .cie file first, then
darktable-chart will recognize it. I had the same problem.
Regards,
Tim.
____________________________________________________________________________
darktable user mailing list
to unsubscribe send a mail to [email protected]
