Photoshop curves in LR

[mrflat]

I have a custom Photoshop .ACV curve file that I would like to use in Lightroom. Is there any way to convert an .ACV file to a preset?

 

[rcannonp]

You can create an xmp file and save it as a camera raw preset, which will show up in the Point Curve menu in the Tone Curve palette. It would look something like this:

<x:xmpmeta xmlns:x="adobe:ns:meta/" x:xmptk="Adobe XMP Core 4.2-c'2' 1.124'78, Tue Sep 11 2''7 23:21:4'        ">
 <rdf:RDF xmlns:rdf="http://www.w3.org/1999/'2/22-rdf-syntax-ns#">
  <rdf:Description rdf:about=""
    xmlns:crs="http://ns.adobe.com/camera-raw-settings/1.'/">
   <crs:Version>4.5</crs:Version>
   <crs:ToneCurveName>Overlay</crs:ToneCurveName>
   <crs:ToneCurve>
    <rdf:Seq>
     <rdf:li>', '</rdf:li>
     <rdf:li>45, 2'</rdf:li>
     <rdf:li>128, 128</rdf:li>
     <rdf:li>2'', 23'</rdf:li>
     <rdf:li>255, 255</rdf:li>
    </rdf:Seq>
   </crs:ToneCurve>
   <crs:HasSettings>True</crs:HasSettings>
  </rdf:Description>
 </rdf:RDF>
</x:xmpmeta>

This section lists the curve points with the input first and then the output second. You could figure out the points on your Photoshop curve and enter them.

<rdf:Seq>
     <rdf:li>', '</rdf:li>
     <rdf:li>45, 2'</rdf:li>
     <rdf:li>128, 128</rdf:li>
     <rdf:li>2'', 23'</rdf:li>
     <rdf:li>255, 255</rdf:li>
    </rdf:Seq>

 

[mrflat]

Can I list the individual R, G, B curves too?

 

[Kiwigeoff]

Can I list the individual R, G, B curves too?

I haven't seen the possibility of splitting the LR curve into colours, so I don't think it would be possible - who knows !!:cheesy::lol::lol:

 

[johnbeardy]

Probably better to focus on what you are actually trying to achieve. What do you want to do to your pictures?

 

[mrflat]

I have some PS curves that simulate some classic films: Portra, Provia and Astia. I'm trying to replicate them in LR.

 

[johnbeardy]

Classic? They're barely 1' years old!

Why not look at http://inside-lightroom.com/ and adapt one of the Velvia presets.

John

 

[Victoria Bampton]

Or to save editing text files, just make the adjustments to a file in ACR, and then import that file into LR. The curve should go too, and then you can save that as a preset to use on other files.