Hi,
Working on an answer, but not there yet.
When saving a DNG file in say TIFF a 'side car' file is exported, like the one below:
http://echophoto.dnsalias.net/ekr/Articles/MFDJourney/RawImages/MFDB_VS_DSLR2/Femore2_20131124-CF044335.xmpAccording to the DNG documentation I posted this is stored with tag=700 in a DNG file.
That file contains among other data settings for the gradient tool:
<crs:GradientBasedCorrections>
<rdf:Seq>
<rdf:li>
<rdf:Description
crs:What="Correction"
crs:CorrectionAmount="1.000000"
crs:CorrectionActive="true"
crs:LocalExposure="-0.124183"
crs:LocalSaturation="0.294118"
crs:LocalContrast="0.000000"
crs:LocalClarity="0.000000"
crs:LocalSharpness="0.000000"
crs:LocalBrightness="-0.098039"
crs:LocalToningHue="0.000000"
crs:LocalToningSaturation="0.000000"
crs:LocalExposure2012="-0.156453"
crs:LocalContrast2012="0.000000"
crs:LocalHighlights2012="-0.411765"
crs:LocalShadows2012="0.000000"
crs:LocalClarity2012="0.202614"
crs:LocalLuminanceNoise="0.000000"
crs:LocalMoire="0.000000"
crs:LocalDefringe="0.000000"
crs:LocalTemperature="0.000000"
crs:LocalTint="0.000000">
<crs:CorrectionMasks>
<rdf:Seq>
<rdf:li
crs:What="Mask/Gradient"
crs:MaskValue="1.000000"
crs:ZeroX="0.596873"
crs:ZeroY="0.631574"
crs:FullX="0.595705"
crs:FullY="0.375582"/>
</rdf:Seq>
</crs:CorrectionMasks>
</rdf:Description>
</rdf:li>
</rdf:Seq>
</crs:GradientBasedCorrections>
As you can see this information is readable. On the other hand it just lists parameters which are used, for instance:
crs:LocalHighlights2012="-0.411765"
Tells that LocalHiglights is at -0.411765, to implement it you need emulate higlight compression method in Lightroom.
You can easily transfer non "well know" parameters, like exposure, ranking and cropping. Indeed, many tools handling DNG files transfer exposure, cropping etc, but not proprietary methods.
Best regards
Erik
Erik
That's not what I was asking. I'm talking about complex changes to images on layers, like dodging and burning, spot healing, cloning, sharpning etc. All data that's being made while PP's an image.