I've had this about 20+ years now and its time to go. I've let my Photoshop subscription lapse and while figure that out i'm just inverting the levels/adjusting the colors caveman style, in Preview... And the ceiling light is reflected on the neg. I will have a bunch more movie stars, found oddballs, 1950's and 1960's cheesecake, original negatives (in various formats) and gelatin-silver prints up for sale in the coming weeks..
Check back if this is your thing.