Mac packages are easier to extract without even installing (and installing proprietary software is not very good for security, that's why I went straight to trying to extract only the files I wanted) It's several layers of different but relatively common archive formats: dmg, xar, gzip, cpio. You'll need to go into them roughly like this: CameraRaw_10_3.pkg -> CameraRawProfiles.pkg -> CameraProfiles At all steps ignore the file extensions and use `file` utility to test the actual file type. When unsure what file to try, aim for bigger files. Perhaps some steps are harder to do on systems other than macOS, I didn't try to extract it on other systems.
After than I used `dcamprof`, it's 2 steps: convert to JSON and then use make-icc command (I had to also explicitly tell it the profile name). > On 5 May 2018, at 00:31, Coding Dave <codingd...@gmail.com> wrote: > > Hi, I would like to follow your approach and compare the Darktable profiles > for my Nikon D750 with the ones I did on my own and your method. I found the > camera raw plug-in downloader from adobe in version 10.3 and downloaded it > for both, mac and windows. Now Im stuck: Neither using wine and the nullsoft > installer nor using xar to extract the macOSX package gave me the dcp files. > Am I missing something? Could you please give some more details on how to get > your color matrices? > > Cheers, > Dave > > 2018-05-04 21:10 GMT+02:00 Sarge Borsch <sausagefacto...@gmail.com>: > So, I tried to edit an ICC file in a hex editor to put the values from that > website, and, just as expected, got nonsensical results. > > After that I tried another idea to snatch better color profiles — I searched > the web for Adobe Camera Raw package, extracted the profiles from it (they > are in .dcp format), and figured that it's possible to convert them to ICC by > dcamprof. > They seem to work very well — better than the currently built-in input > profiles for sony a5100 in darktable. > Now what do you think about the copyright status of these converted ICC > profiles? Can they legally be distributed with darktable, or should I keep > them only for myself? > They are a lot smaller than the source .dcc files, probably because they > don't keep nothing valuable except the color matrices. So are 3x3 numeric > matrices copyrightable? > > If you think these profiles can be officially added to darktable, I may fix > the name tags and submit a pull request. > > > On 4 May 2018, at 17:14, Sarge Borsch <sausagefacto...@gmail.com> wrote: > > > > Hi. > > I see that there are measured color responses at > > https://www.dxomark.com/Cameras/Sony/A5100---Measurements > > Hence the question: is it a good idea to try to take the built-in profile > > and replace the primaries with these measured values, in order to get > > closer to the in-camera JPEG color rendering? (or are they already used?) > > > > I'm asking that because I've noticed that none of the built-in input color > > profiles for sony a5100 allows me to get close to the in-camera JPEG colors. > > The 2 of them which are the closest to the correct rendering (that is, > > matching camera JPEG, which is quite good when judging by eye) are the > > "standard color matrix" and "linear Rec2020 RGB". > > Both of them wildly differ from the in-camera JPEG in deep blue colors: > > "standard color matrix" causes them to be clipped and to look really > > unnatural, and "linear Rec2020 RGB" looks more or less natural, but the hue > > is obviously different (blue gets moved to cyan). Hence I started to wonder > > how easy is it to get a better color profile. > > > > I know that ideally this should be done with a color chart, but I don't > > have one and don't have spare money for it at the moment. > > > > Also I can share a shot of the example object (Raw + JPEG) which has such > > problematic color if anyone wants to test it, too. > > ___________________________________________________________________________ > darktable developer mailing list > to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org > > > > ___________________________________________________________________________ > darktable developer mailing list to unsubscribe send a mail to > darktable-dev+unsubscr...@lists.darktable.org ___________________________________________________________________________ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
