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restoring old ektachrome slides

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Post Options Post Options   Quote bms44974 Quote  Post ReplyReply Direct Link To This Post Topic: restoring old ektachrome slides
    Posted: 27 January 2021 at 18:52
I have inherited some old slides from my parents and, after determining that the cost of a scanning service was about twice the cost, I purchased a 7200ppi Plustek OpticFilm 8100 scanner. The Kodachrome slides are still in excellent shape, but the Ektachrome slides from the 1950s have turned a rosy red hue. I am scanning to PSD format to maximize my options in post processing. Do any of you have a Lightroom color profile or set of development settings or Photoshop filter that will help recover at least some of the original color?

Here is an example:


Thanks... Brian

Edited by bms44974 - 27 January 2021 at 20:31
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Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 27 January 2021 at 19:04
Is there anything white/grey in the picture? It seems there is a toy snowman in this one. or maybe the picture frames? Use the whitebalans pointer. It works with the orange of negatives.


(Isn't it Ektachrome?)
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Post Options Post Options   Quote bms44974 Quote  Post ReplyReply Direct Link To This Post Posted: 27 January 2021 at 20:32
I had no luck with the white balance pointer last night.

Thanks for the spelling correction!

Cheers... Brian
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 27 January 2021 at 22:52
Looking at the tone curve, the green has dropped down and the red has moved up. Simply shifting them sideways takes away most of the colour cast.
It's difficult to correct without knowing how red the shirt and couch are, and the deep blacks are going to be shaded a bit. How realistic does this look?



This was a quick and dirty trial in playmemories, but if you try this in LR and save the presets you can do it as a batch to the lot, then tweak individual ones worth doing. To be honest, I'd want to check some outdoor shots first as indoor shots were notoriously difficult to get right. Even Ektachrome 160 tungsten didn't always work well and if you used the usual outdoor film they could look quite poor even before they aged.

Oh, I pulled the RGB tone curve down a bit just left of centre to reduce the veiling. This usually helps a little, but get the whites and blacks right first (if you can).

My guess is the wallpaper is now too purple, but correcting that pushes the deep shadows green. It may have looked off when it was done originally, though!

Edited by Miranda F - 27 January 2021 at 23:03
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Post Options Post Options   Quote sybersitizen Quote  Post ReplyReply Direct Link To This Post Posted: 27 January 2021 at 23:03
That's really bad deterioration.

I was able to get something like normal color from it with a lot of massaging in Photoshop using a combination of operations including Variations adjustments, but it was certainly not a single-click solution.

http://thesybersite.com/public/Adjusted_Ektachrome.jpg
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 27 January 2021 at 23:06
Originally posted by sybersitizen sybersitizen wrote:

That's really bad deterioration.

I was able to get something like normal color from it with a lot of massaging in Photoshop using a combination of operations including Variations adjustments, but it was certainly not a single-click solution.

http://thesybersite.com/public/Adjusted_Ektachrome.jpg

The sofa and tabletop look more believable but I think most of the colour has been lost in that version, Syber. The lampshade looks like it should be red.
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Post Options Post Options   Quote sybersitizen Quote  Post ReplyReply Direct Link To This Post Posted: 27 January 2021 at 23:08
Yours doesn't look so good either. Too much has been lost from the original color to be rescued without a lot of effort.
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Post Options Post Options   Quote bms44974 Quote  Post ReplyReply Direct Link To This Post Posted: 27 January 2021 at 23:51
Thanks to all three of you!

I have since learned that the green and blue tints used in the Ectachrome slides fades over time. I suspect that I will have to boost green and blue to match red or bring all three back into balance. Not knowing the rate at which the green and blue faded over time suggests that this may be a manual process based on the age of the slide.

I will keep you all posted on my progress

Cheers... Brian
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Post Options Post Options   Quote sybersitizen Quote  Post ReplyReply Direct Link To This Post Posted: 27 January 2021 at 23:54
Good luck. I might prefer to just go with black and white:

http://thesybersite.com/public/Adjusted_Ektachrome_BW.jpg
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Post Options Post Options   Quote Miranda F Quote  Post ReplyReply Direct Link To This Post Posted: 27 January 2021 at 23:55
+1
Miranda F & Sensorex, Sony A7Rii, A58, Nex-6, Dynax 4, 5, 60, 500si/600si/700si/800si, various Sony & Minolta lenses, several Tamrons, lots of MF primes and *far* too many old film cameras ...
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Post Options Post Options   Quote bms44974 Quote  Post ReplyReply Direct Link To This Post Posted: 28 January 2021 at 01:44
Given my PP skills, that is a serious consideration
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Post Options Post Options   Quote waldo_posth Quote  Post ReplyReply Direct Link To This Post Posted: 29 January 2021 at 11:53
Since I had at some time a large lot of Kodachrome slides which had acquired a very dominant orange coloring I used an Kodachrome IT8 target for calibrating my scanner (Nikon) using the Silverfast software. After the calibration the strong orange cast vanished completely from the scans (sorry I really don't know much why this works so well).

I have checked - Siverfast is currently only offering targets for Fujifilm. But I have seen that there are quite a number of third-party offerings. You might be lucky if you find an Ektachrome target, calibrate your scanner and solve your problem - but, of course, I can give no guarantee.

Edit: This service offers an Ektachrome target (K3) for slide scanners.

Edited by waldo_posth - 29 January 2021 at 11:57
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Post Options Post Options   Quote bms44974 Quote  Post ReplyReply Direct Link To This Post Posted: 29 January 2021 at 12:51
Thanks for the link, Harald! It's unclear from the site whether the target is for current or old Ektachrome slides. I may contact Wolf to see if he has any suggestions.

Cheers... Brian
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Post Options Post Options   Quote bms44974 Quote  Post ReplyReply Direct Link To This Post Posted: 29 January 2021 at 23:56
Hi All,

I have discovered "Automatic Image Optimization and Color Contrast Removal" in SilverFast SE Plus. It can't correct the extreme image above, but it does a good job with modestly "impaired" images:







Edit: Yes, that's me in the pool

Edit #2: this was a Kodachrome slide

Edited by bms44974 - 30 January 2021 at 00:03
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