It was the Kaiser LED light panel. Despite having a warmer (neutral 5000-5500°K) light with high CRI, giving purer color channels... It all falls apart, because the LED's induces a strange pattern, when you make copies from color negatives, resulting into a strange grid-pattern in the red as well green channel.

Once I used my older HUION LED light panel - the pattern was gone. Clearly much better. Despite not having any CRI number (unknown), i had no trouble with colors in any way together with Negative Lab Pro v2.3

So, I bought this oh-so-much-better Kaiser light panel... for nothing. Well, I use it now as my light board for negative and slides. While the Huion panel is once again used for making digital copies form my negatives of all kind.

Strange how things go. I guess I took leap of faith, walking through the forum at Negative Lab Pro, in which it is propagated that you need light sources with high CRI, in order to get cleaner color reproduction.

I know that the Huion LED light panel has a much colder light - but I did not notice any strange or muddy colors. On the contrary, i even got better color reproduction in clear blue skies, more natural blue rather then going towards green with the Kaiser. Albeit i must add, that now i am no longer using any CYAN filter - just the pure LED light. I also lowered the cameras color balance from earlier 5500°K down to 3300°K with the Huion.

 

And it all works !

In fact, with my new Apple Mac Studio - with "only" 32 GB unified memory, i was fully capable to work with 50 image files in Lightroom, while then post-processing them in Photoshop (so all files where open). There was a minimal disk swap going on, but I did not notice any slowdowns. Pretty impressive.

Naturally to took 1.5-2 hours for me to finalize the 50 image files. Which by the way were from different films, as well motives taken in different light. Every single color image gave me excellent colors (once I added adjustment during post processing). Very clear colors, much purer than i ever got with film or flatbed scanners.

I felt absolutely thrilled. All of the sudden all these forgotten color film negatives from 2017 - shine, coming to life with good colors, good contrast and fine sharpness thanks of using a digital camera instead of a flatbed scanner.

I also noticed, that my developing process in C-41 chemicals was in fact good work. There is no shift to be seen. you know such as when the highlights shit into greenish, and the darkest parts into red. Or the other way around. I must have, after all, worked with stable temperatures and good discipline, when manually developing color negative films in the C-41 process.

It all makes me very happy, finally having found a stable process in the while chain of steps - from taking the images, to developing, to scan and post process them - and with very good results. I really got very strong, positive feelings. And no more pesky patterns introduced from wrong LED light panels.


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