Lightroom Profile - looktable

[jjasu]

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.

[ssprengel]

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

[jjasu]

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.

[HDL_PHOTO]

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?

[johnrellis]

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 .