One negative comes out perfectly, another nearly identical neg looks awful—can't figure out what's going wrong

Image Editing Help
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When posting about Image Conversion Issues, please include the following information:

  1. Which version of Negative Lab Pro are you using? V3.1.1

  2. If using DSLR scanning, please include: 1) camera make/model, 2) lens make/model, 3) light source make/model Sony A7III with Sigma 70mm 2.8 DG ART and a Cinestill CS-Lite

Hi everyone, this is my first post so hopefully this is an OK place to ask. I’ve been going through the process of digitizing 10,000+ negatives from my grandfather, and up until last summer, I was manually converting them in Lightroom. The results were fine, but I quickly realized they could be much better with NLP.

That said, I’m still learning how best to manipulate NLP to consistently get the results I want, and sometimes what it outputs is totally confounding. Enter exhibit A:

The photo on the left turned out pretty much perfectly with very little tweaking, but then the very next frame turns out like this.

Screenshot 2026-02-23 at 3.20.28 PM
Screenshot 2026-02-23 at 3.20.28 PM1920×1054 2.93 MB

The settings used to scan were identical. It appears that the second photo was shot with flash, and there’s no sky visible which is bound to make it more difficult for NLP to properly process. I would think that dropping the black clip and fiddling with the WB would fix it, and that does help, but no matter what I do, the greens look radioactive and the image looks overall much worse than the previous frame. I figured maybe I could sync the analysis/settings of the previous frame, but when I try, there is zero change. Not sure if I’m maybe approaching that wrong.

If anyone has advice on what to do, I’d be very grateful! Here are the RAWs: NLP - Google Drive

Thanks,

Finn

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had the same issue too if I batch converted it (over 60 pics at once). Now I do a couple at once and it is waaaaay better. think it has something to do with whitebalance or something. I could be wrong tho since im still a greeny on negative scanning and converting.

If all else fails then you could just convert that one picture and see if its behaving better.