Help: Green Edges in Scans

Digital Camera Scanning
1

Hi

Since switching to the Tokina Firin 100mm f/2.8, I’ve got those green edges in most (but not all) of my negatives. Any clues on what I’m doing wrong?

2025-03-10_21-12-59
2025-03-10_21-12-59609×467 338 KB

This film was Kentmere 100 pused +1. (Scanned matt side)

Camera: Sony A7RM2 (f8, ISO 100, Compressed Raw)
Lens: Tokina Firin 100mm f/2.8
Light: Kaiser slimlite plano (Set to full brightness)
Holder: Negative Supply Basic Film Carrier 35 MK2
Room completely dark, lens hood mounted, remote shutter used

With my old setup (LA-EA4 + Tamron 90mm f/2.8), I never had those colored edges.

2

In addition to the green colour fringes, I think I can also see some magenta. Could these be chromatic aberrations of the lens at high-contrast edges of the image?

After (admittedly very brief) research on this lens, it seems to have a higher tendency towards chromatic aberrations: https://phillipreeve.net/blog/review-tokina-firin-100mm-f2-8-fe-macro/#attachment_19298

3

Welcome to the forum @mblank. If the lens is all that you have changed then that does rather suggest that it is CA. Is it uniform across your image or worse towards the edges? If you are an NLP user I presume you are using Lightroom, does LR have a correrction profile for that lens and were you using one for the Tamron?

4

Well, this looks like it. Sadly I did not come across that article before buying the lens (luckily rather cheap). Thanks

5

In addition to switching lenses, I’m new to Lightroom and NLP. No, I wasn’t using one with the Tamron. Will try the profile when I’m back from traveling, thanks for the suggestion.

6

Well maybe the Tamron doesn’t need it and you may well be able to fix the Tokina in Lightroom manually, you’ll certainly improve it.