I need assistance reading metadata from file related to tone curve

Forum|Forum|4 years ago
December 17, 2021
2 replies
382 views

Long story short, after a recent LRC update it wiped out all of my presets. Awesome i know, fortunately one of my favorite presets i made i would transfer to LR and it would save as a .tiff file. I was able to go back into LR on a previous edit and extract the metadata from my editing. The last part i cannot decipher is related to the Tone Cruve - which i assume is the points. But i struggle to distinguish between the Total Curve, Red Channgel, Blue, Green Etc. I will list the code below for anyone that could help me it would be so appreciated. Happy Holidays and save your presets you love offline..

<crs:ToneCurve> <rdf:Seq> <rdf:li>0, 0</rdf:li> <rdf:li>32, 22</rdf:li> <rdf:li>64, 56</rdf:li> <rdf:li>128, 128</rdf:li> <rdf:li>192, 196</rdf:li> <rdf:li>255, 255</rdf:li> </rdf:Seq> </crs:ToneCurve> <crs:ToneCurveRed> <rdf:Seq> <rdf:li>0, 0</rdf:li> <rdf:li>255, 255</rdf:li> </rdf:Seq> </crs:ToneCurveRed> <crs:ToneCurveGreen> <rdf:Seq> <rdf:li>0, 0</rdf:li> <rdf:li>255, 255</rdf:li> </rdf:Seq> </crs:ToneCurveGreen> <crs:ToneCurveBlue> <rdf:Seq> <rdf:li>0, 0</rdf:li> <rdf:li>255, 255</rdf:li> </rdf:Seq> </crs:ToneCurveBlue> <crs:ToneCurveName2012>Custom</crs:ToneCurveName2012> <crs:ToneCurvePV2012> <rdf:Seq> <rdf:li>0, 13</rdf:li> <rdf:li>25, 19</rdf:li> <rdf:li>105, 109</rdf:li> <rdf:li>185, 168</rdf:li> <rdf:li>255, 220</rdf:li> </rdf:Seq> </crs:ToneCurvePV2012> <crs:ToneCurvePV2012Red> <rdf:Seq> <rdf:li>0, 1</rdf:li> <rdf:li>26, 20</rdf:li> <rdf:li>128, 126</rdf:li> <rdf:li>255, 255</rdf:li> </rdf:Seq> </crs:ToneCurvePV2012Red> <crs:ToneCurvePV2012Green> <rdf:Seq> <rdf:li>0, 0</rdf:li> <rdf:li>29, 21</rdf:li> <rdf:li>126, 125</rdf:li> <rdf:li>255, 255</rdf:li> </rdf:Seq> </crs:ToneCurvePV2012Green> <crs:ToneCurvePV2012Blue> <rdf:Seq> <rdf:li>0, 8</rdf:li> <rdf:li>29, 22</rdf:li> <rdf:li>126, 124</rdf:li> <rdf:li>255, 252</rdf:li> </rdf:Seq>

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Todd Shaner

Legend

"I was able to go back into LR on a previous edit and extract the metadata from my editing."

Exactly how did you did you extract this metadata. It's all in the details. I created a Tone Curve with one point (128, 192) added to each of the four Point curves and added four settings (5, 5, -5, -5) to the Parametric Curve. Here it is, which may be helpful.

crs:ParametricShadows="-5"
crs:ParametricDarks="-5"
crs:ParametricLights="+5"
crs:ParametricHighlights="+5"
crs:ParametricShadowSplit="25"
crs:ParametricMidtoneSplit="50"
crs:ParametricHighlightSplit="75"

crs:ToneCurveName2012="Custom"

<crs:ToneCurvePV2012>
<rdf:Seq>
<rdf:li>0, 0</rdf:li>
<rdf:li>128, 192</rdf:li>
<rdf:li>255, 255</rdf:li>
</rdf:Seq>
</crs:ToneCurvePV2012>
<crs:ToneCurvePV2012Red>
<rdf:Seq>
<rdf:li>0, 0</rdf:li>
<rdf:li>128, 192</rdf:li>
<rdf:li>255, 255</rdf:li>
</rdf:Seq>
</crs:ToneCurvePV2012Red>
<crs:ToneCurvePV2012Green>
<rdf:Seq>
<rdf:li>0, 0</rdf:li>
<rdf:li>128, 192</rdf:li>
<rdf:li>255, 255</rdf:li>
</rdf:Seq>
</crs:ToneCurvePV2012Green>
<crs:ToneCurvePV2012Blue>
<rdf:Seq>
<rdf:li>0, 0</rdf:li>
<rdf:li>128, 192</rdf:li>
<rdf:li>255, 255</rdf:li>
</rdf:Seq>
</crs:ToneCurvePV2012Blue>

Todd Shaner

Legend

LrC update should not have deleted your presets. How were these presets created? In the Presets panel click on the + down arrow and select 'Manage Presets.' Make sure all of the preset groups are checked. If not check them and then close and restart LrC.

The other possibilty is that you are using 'Store Presets with Catalog.' If so make sure Edit> Preferences 'Store presets with this catalog' is checked. If not check it and close and restart LrC.

R

richardplondon

Community Expert

If storing presets with Catalog, it's worth checking whether those have been transferred into the right location for the newly converted Catalog - which was created (under new naming) on first running the new software version.

If that has not happened, this new Catalog copy would not show any presets present.

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