I have Adobe Lightroom 5, it was the last version I was able to purchase without a subscription. Would NLP work with this version of Lr, or should I get the new subscription. Thank you very much in advance.
The homepage says it grey on black:
In the guide, which can be found here, you can scroll down to find this:
“I have a Lightroom version OLDER than Lightroom 6 (like Lightroom 3, 4 or 5). Can I make it work?” You can’t, unfortunately. LR 6 is the minimum requirement because earlier versions of Lightroom did not support the more advanced SDK methods needed to make Negative Lab Pro work.