Topics

FCPX colour science

James Marsden
 

Hi Daniel
I don’t have a definitive answer for you but there are a couple of suggestions I can make, one is that I do know that FCPX uses colour sync or rather is colour sync enabled which means that it uses MAC OS’s system level colour calibration system base of ICC profiles which are more common in stills and print colour cali ration workflows, this is also how Apple screens are calibrated, there is some crossover here as the stills and screen cloud space sRGB is basically the same as REC.709 just the the former l lacks the reference to a fixed Gamma point implemented in the same way as 709, and historically on big difference between the Mac OS and Windows was the gamma point which the respective OS’s used, one was 2.2 and one was 2.4, can remember which was which but I am sure google will give you the answer, I remember this was something you used to have to set in Adobos Photoshop over 20 years ago.
  SecondMac OS also has system level Level RAW processing which will be effecting the look of the DNG in finder and you could start by looking at installing the Mac OS developer tools and looking through the support document that Apple provide, also in addition to the Developer tools for OSX that Apple provide there are also to to Apps that should help in your testing the obvious one is the free Version of DaVinci resolve that you can download from the app store for free and has the best cinema DNG processing on the Mac as this is what Blackmagic used before they introduced their own RAW, the second is Ben Turley’s LUT calc which does allow you to produce exposure compensated LUT’s which would be useful in treating this is a paid tool but at a very useful cost, I also know that Nick Shaw at Anler post has done some work on this too, I hope that gives you some pointers but at some point after that I think you are getting to the point of asking free consulting that I think should maybe be paid for

Hope that helps

James Marsden
Digital Media Solutions
DIT, Camera, Data and Workflow consultant

07958580678



Geoff Boyle
 

Mac was originally 1.8 with PC at 2.2

 

cheers
Geoff Boyle NSC
EU based cinematographer
+31 637155076

www.gboyle.nl

www.cinematography.net

 

 

From: cml-raw-log-hdr@... <cml-raw-log-hdr@...> On Behalf Of James Marsden
Sent: 07 October 2018 12:39
To: cml-raw-log-hdr@...
Subject: [cml-raw-log-hdr] FCPX colour science

 

Hi Daniel

            I don’t have a definitive answer for you but there are a couple of suggestions I can make, one is that I do know that FCPX uses colour sync or rather is colour sync enabled which means that it uses MAC OS’s system level colour calibration system base of ICC profiles which are more common in stills and print colour cali ration workflows, this is also how Apple screens are calibrated, there is some crossover here as the stills and screen cloud space sRGB is basically the same as REC.709 just the the former l lacks the reference to a fixed Gamma point implemented in the same way as 709, and historically on big difference between the Mac OS and Windows was the gamma point which the respective OS’s used, one was 2.2 and one was 2.4, can remember which was which but I am sure google will give you the answer, I remember this was something you used to have to set in Adobos Photoshop over 20 years ago.

            SecondMac OS also has system level Level RAW processing which will be effecting the look of the DNG in finder and you could start by looking at installing the Mac OS developer tools and looking through the support document that Apple provide, also in addition to the Developer tools for OSX that Apple provide there are also to to Apps that should help in your testing the obvious one is the free Version of DaVinci resolve that you can download from the app store for free and has the best cinema DNG processing on the Mac as this is what Blackmagic used before they introduced their own RAW, the second is Ben Turley’s LUT calc which does allow you to produce exposure compensated LUT’s which would be useful in treating this is a paid tool but at a very useful cost, I also know that Nick Shaw at Anler post has done some work on this too, I hope that gives you some pointers but at some point after that I think you are getting to the point of asking free consulting that I think should maybe be paid for

 

Hope that helps

 

James Marsden
Digital Media Solutions
DIT, Camera, Data and Workflow consultant

07958580678