Lightroom: Provide a Linear Camera Calibration Profile so we don't add unwanted contrast

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HI! Can we please get Linear Camera Calibration Profile in lightroom so we dont add the ****** Contrast!?
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Viktor Wågman

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  • :P

Posted 3 months ago

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DP HOME

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why you need to add ****** contrast with an existing "non linear" profile(s) and at the same time don't need to add ****** contrast with linear (which one might assume has less contrast baked in LUTs inside) ? unless you mean not "add" but the opposite
(Edited)
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Todd Shaner, Champion

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You can use the Adobe DNG Profile Editor (DPE) to change the Base Tone Curve of any camera profile to linear. Instructions here:

https://trentsizemore.com/blog/using-a-linear-camera-calibration-profile/

The DPE edited camera profile needs to be exported to the following folder and LR restarted to load it:

Windows—C: \ Users \ [your username] \ AppData \ Roaming \ Adobe \ CameraRaw \ CameraProfiles \

Mac—Macintosh HD / Users / [your username] / Library / Application Support / Adobe / CameraRaw / CameraProfiles /

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Viktor Wågman

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i know i can use that i use the exat same site that you linkt. :) but it well be nice if adobe can in included linear profiles to.. :) or just make it easier to turn every thing of so you get as flat RAW as possible.. cant be that hard to do..
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Todd Shaner, Champion

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"it well be nice if adobe can in included linear profiles to.. :) or just make it easier to turn every thing of so you get as flat RAW as possible."
Starting with LR 7.3 Adobe added six new 'Adobe Raw' camera profiles including one named 'Adobe Neutral.' The Adobe Neutral profile has a tone curve very close to linear, but without any exposure shift. The DPE created Adobe Standard linear tone curve camera profile shifts exposure in the image by about -.90 EV (see below), which makes it difficult to compare the rendering of different profiles. Give Adobe Neutral a try!

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Viktor Wågman

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but it will still have the medium contrast apllay to it in the tone curve but its ses that it is linear in prosses V.4 :P
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Todd Shaner, Champion

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The new Adobe Raw profiles are only available using Process Version 4 with exception of Adobe Standard. From the screenshots I posted the Adobe Neutral profile provides the same contrast rendering as Adobe Standard with a linear tone curve. There's no benefit using Process Version 2 that I can see to reduce contrast even with a linear camera profile. Adobe is not likely to add new camera profiles that are compatible with ANY process version other than Version 4. If the Adobe Neutral profile isn't providing low enough contrast please provide details on your objectives and type of image files you are processing. Perhaps there are other solutions.
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Viktor Wågman

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you go to Process Version 2 set everthing to zero and set the tone curve to liner then you go back to Process Version4 and you curve should look like in the picture then apply Adobe Neutral then you get the what the raw file Should look like without any added stuff.. :)  
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Todd Shaner, Champion

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The new  Adobe Neutral XMP camera profile already contains a Tone Curve simlar to the one obtained as you describe above. Using that Tone Curve with Adobe Neutral is the same as applying it twice. So it is no longer linear and effectively a negative contrast curve. To see this open the Adobe Neutral.xmp camera profile in any text editor and scroll down to the Tone Curve area.

<crs:ToneCurvePV2012>
    <rdf:Seq>
     <rdf:li>0, 0</rdf:li>
     <rdf:li>16, 24</rdf:li>
     <rdf:li>64, 72</rdf:li>
     <rdf:li>128, 128</rdf:li>
     <rdf:li>192, 176</rdf:li>
     <rdf:li>244, 234</rdf:li>
     <rdf:li>255, 255</rdf:li>
Adobe Neutral by itself with a linear Tone Curve setting should be just that.
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Viktor Wågman

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Todd Shaner, Champion

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I took a quick look at the two videos and agree the "Default Develop Settings" changes made in LR 7.3 (Adobe Color, Higher Sharpening) may not appeal to experienced users. This was done because many novice and first-time LR users complained LR was "ruining" their image files when they saw the camera embedded preview change in the Develop module to the lower contrast and color saturation  "default settings." I use my own custom "Default Develop Settings" so this has no affect to my LR settings. You can do likewise by resetting an image file, apply YOUR desired camera profile and settings, hold the ALT key and click on the Develop module Reset button, and then click on 'Update to Current Settings.' You'll need to do this for each camera model you use.

Andy Astbury's scathing review of LR 7.3 update completely overlooked the new Adobe Neutral camera profile and doesn't even mention it! There's no need to use Camera Neutral and apply a PV2010 Zeroed Tone Curve to get a "iinear" tone curve. As already explained the new Adobe Neutral profile uses a linear tone curve that produces virtually the same toning. In fact Adobe Neutral provides more highlight detail than Camera Neutral with a PV2010 Zeroed Tone Curve. Enjoy!
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Viktor Wågman

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THX! :D hope you did comment that on is videos if he dont know that! :)
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Todd Shaner, Champion

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Done at both YouTube videos! Let's see how he comments!
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Viktor Wågman

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GOOD! :d
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Viktor Wågman

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Did he answer?

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Todd Shaner, Champion

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Sort of....he pinned an older comment to the top of the comments. It basically says, "Don't try and give me advice!"
https://www.youtube.com/watch?v=Zgg7G053fP4
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Viktor Wågman

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Todd Shaner, Champion

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What's interesting is that Adobe did try to address this issue (excessive contrast) by silently changing the metrics for the Adobe Standard camera profile  starting in September of 2014. All new camera models introduced after that date use a new Adobe Standard camera profile with lower contrast and color saturation.

https://forums.adobe.com/message/9095782#9095782

IMHO this was a mistake since that makes it very difficult to "match" the rendering of older model (pre September 2014) cameras to newer models introduced after this date. This is especially true for wedding photographers who typically use multiple photographers with different cameras. So they are forced to use something like Camera Standard, which has even higher contrast. Well at least now we have Adobe Neutral, which should render the same across camera models.
(Edited)
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John MacLean

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Just curious, why do you need it so flat?
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Viktor Wågman

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so you add contrst to your imges not lightroom whitout you knowing.. ;)
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John MacLean

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I've never seemed to have a problem with it. Just curious if you have any example photos where you're running into this problem?
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I often use Camera Faithful with very high-contrast images and for copy work of paintings and film image capture. Adobe Neutral has an even lower contrast curve if needed. Here's an example shot of an oil painting with the same LR settings applied using Adobe Standard (Left) and Adobe Neutral (Right). Which looks better to you?

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Viktor Wågman

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i have read those 2 links on RAWDIGGERS Site. that ware i learn this all in the fist place.. :)