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Lightroom Profile - looktable

Community Beginner ,
Apr 20, 2018

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So in the SDK for ACR and Lightroom profiles a looktable is mentioned along with a LUT.  It is a CSV file in the SDK package.  Im having trouble figuring out that file - what does it represent and how can I use in profiles.

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Lightroom Profile - looktable

Community Beginner ,
Apr 20, 2018

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So in the SDK for ACR and Lightroom profiles a looktable is mentioned along with a LUT.  It is a CSV file in the SDK package.  Im having trouble figuring out that file - what does it represent and how can I use in profiles.

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Adobe Community Professional ,
Apr 20, 2018

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There is a DNG forum, and there is a small possibility someone over there will be able to give you some technical details, probably more chance than posting in the general LR Classic CC forum:

https://forums.adobe.com/community/dng

Also LUT = Look Up Table

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Community Beginner ,
Apr 20, 2018

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Thanks, didn't even look for a DNG forum - should have.  Yeah I know that LUT is a look up table but the SDK also mentions

"Instead of (or even in addition to) the RGB LUTs we’ve just been working with, you can include a “Look Table.” "

they appear to be CSV files that affect the hue, saturation,values but im not exactly sure how.

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Explorer ,
Apr 21, 2018

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I am also trying to understand the practical difference between a LookTable vs. LUT in a profile. Why use a LookTable? What can a Looktable do that a LUT cannot?

Also, is there a tool to create LookTables?

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Most Valuable Participant ,
Apr 21, 2018

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The ACR and Lightroom Profile SDK provides a fair amount of detail explaining the differences between Look Tables and Color Lookup Tables and how to create look tables: Digital Negative (DNG), Adobe DNG Converter | Adobe Photoshop CC

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