Scanning colour cast problem. What next?

Scanning colour cast problem. What next?

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paul.deitch

Original Poster:

2,142 posts

263 months

Monday 5th December 2022
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I have a project running for years scanning in mine and the families old photos, negs, slides etc. Mostly without problems.
I'm currently scanning some 126 colour neg film shot in 1974 when I did an internship in the USA and then hitch-hiked all over.
The original prints are ok but faded. The neg scans are terrible with a strange colour balance. The negs look purple and the scans greenish!
Here's an example of the neg, scanned as a positive.

Here's an example of the scan, scanned as a neg.

Is this typical of old Kodak negs?

Anyone had a similar experience or knows of the problem or how to easily solve it?
Oh, and yes my then girlfriend and I were hitching rides in small private planes across America. Not possible today! smile

Simpo Two

86,674 posts

271 months

Monday 5th December 2022
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Colour negative film has that colour cast. IIRC you need specific software to dial it out.

tog

4,600 posts

234 months

Tuesday 6th December 2022
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Can't you just click on a neutral area to correct the white balance?

paul.deitch

Original Poster:

2,142 posts

263 months

Tuesday 6th December 2022
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I should have done a bit more research. Seems to be a known problem with 1970s Kodacolor II negative film, processed by C-41.
Link here https://www.photomemorabilia.co.uk/Colour_Darkroom...

Oh well. Now on to experimenting and manual processing. Wish I'd scanned them 20 or 30 years ago.

Riley Blue

21,473 posts

232 months

Tuesday 6th December 2022
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Film dyes can be very unstable as I discovered when checking through the many boxes of transparencies my Dad took during the 1950s when he was stationed in the Middle East. There are thousands of slides, and though they've been stored correctly, over the decades every one has deteriorated to some degree.

I've given up all thoughts of trying to 'rescue' them, it would take far too long.

_Hoppers

1,329 posts

71 months

Tuesday 6th December 2022
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How accurate do you need the colour correction to be? This isn't perfect but it was a minute's worth of correction in Lightroom. I clicked on the plane's wing using the white balance selector, a few tweeks to temperature and tint and a minor bit of split toning. I'm guessing if you use the same scan setting for further negs you could then copy these settings across and not have to do much more?



Edited by _Hoppers on Tuesday 6th December 09:50

sociopath

3,433 posts

72 months

Tuesday 6th December 2022
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As above, bulk processing should get the majority done, then just tweak the ones that are important.

I once had an assistant at a wedding shoot everything with the tungsten setting, the bulk processing saved me hours of work

paul.deitch

Original Poster:

2,142 posts

263 months

Tuesday 6th December 2022
quotequote all
I've been using Vuescan with the Epson V500 which until now has scanned everything perfectly with a variety of scanners from my motorised Nikon to an A3 scanner.
I decided to have a go with Epson Scan on fully automatic and... it's almost got it right. There is still a slight colour cast but it's much better and yes I guess that I can batch process them.
Sometimes it has a problem automatically recognising the 126 square frame but if I must scan frames individually then...
Thanks for the feedback.