"I assume GrayGamma2.2 is an Adobe thing." In is a working colorspace in PhotoShop.
2016-03-22 18:59 GMT+01:00 Oliver Bedford <[email protected]>: > Am Dienstag, den 22.03.2016, 16:32 +0100 schrieb Tobias Ellinghaus: > > >If the GW2765 2015-03-12 S 3xCurve+MTX profile is correct then it's >fine. > > > > > I'll have to redo the calibration, but otherwise it's correct. > > > Instead of offering an ICC profile one online lab claims I should use > > > the black & white standard profile GrayGamma2.2 for printing on Ilford > > > Baryta paper. How do I do this? > > > > Did they provide you a .icc file? Or could you find the right one on the > Web > > somewhere? If you got it, put it into ~/.config/darktable/color/out/ > (you > > probably have to create the directory first). Then you can select it as > the > > softproofing profile in darktable by right clicking the softproof button > in the > > lower toolbar of darkroom. > > > For grayscale no icc profiles are provided (in contrast to color > prints). I've already used the softproofing feature of dt with other icc > profiles. > > Quoting the website: > " > [...] > Uploaded files should ideally be 300 DPI, 8-bit, and have an embedded sRGB > color profile. > [...] > Color space > > Your files may be uploaded in RGB or in CMYK. CMYK files will be converted > into RGB in the production process. If a color profile is not attached to > the file, we will assume that your file has an sRGB profile. For grayscale > files, we use GrayGamma2.2 as a basis." > > I assume GrayGamma2.2 is an Adobe thing. > > In Gimp I can add a Gamma display filter and input a Gamma value of 2.2. > Photoshop does perhaps offer something similar (???). > > When using 2.2 the image changes quite drastically, so I'm not sure even > this approach would be correct. But of course, I would very much like to > keep my workflow within dt. > > Regards, > Oliver > > > Tobias Ellinghaus <[email protected]> schrieb am 16:32 Dienstag, 22.März 2016: > > > Am Montag, 21. März 2016, 21:09:29 schrieb Oliver Bedford: > > Hi, > > > > before making some large scale b&w prints I want to softproof my images. > > > > darktable-cmstest reports: > > > > "darktable-cmstest version 2.0.2 > > this executable was built with colord support enabled > > darktable itself was built with colord support enabled > > > > DP-1 the X atom and colord returned different profiles > > X atom: _ICC_PROFILE (82880 bytes) > > description: GW2765 2015-03-12 S 3xCurve+MTX > > colord: "(none)" > > description: (file not found) > > > > Better check your system setup > > - some monitors reported different profiles > > You may experience inconsistent color rendition between color managed > > applications" > > > > What should I do to improve this? I don't really know where to look. > > (Xubuntu 14.04.4) > > If the GW2765 2015-03-12 S 3xCurve+MTX profile is correct then it's fine. > > > Instead of offering an ICC profile one online lab claims I should use > > the black & white standard profile GrayGamma2.2 for printing on Ilford > > Baryta paper. How do I do this? > > Did they provide you a .icc file? Or could you find the right one on the > Web > somewhere? If you got it, put it into ~/.config/darktable/color/out/ (you > probably have to create the directory first). Then you can select it as > the > softproofing profile in darktable by right clicking the softproof button > in the > lower toolbar of darkroom. > > > > Regards, > > Oliver > > > Tobias > > > ____________________________________________________________________________ > darktable user mailing list to unsubscribe send a mail to > [email protected] > ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
