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DP2m: first images, first problems

Started Oct 28, 2015 | Discussions thread
OP mclaudio Regular Member • Posts: 264
Re: Preliminary Analysis

Mike, many thanks for your comment. I tried to convert to B&W (in lightroom) some images with the problem and the purple/red/cyan areas disappear. I also tried to sepia-tone these images and still the purple areas are not present. But I feel that you are right, that some color casts are at least partially caused or emphasized by some combinations of brightness/luminance, I will try to better understand.

thanks again

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Claudio

Mike Gerstner wrote:

mclaudio wrote:

Maybe is just my monitor (I'm using a 5 year old MacBook Pro with non calibrated monitor), actually in some cases I see similar effects also sepia-toning B&W photos, I don't know

I have seen that before.........in SPP use the monochrome mode, or just desaturate the image. If the faint color is still there it is your monitor. Zoom in a little on the desaturated image and scroll the image up & down and you'll notice the faint tint in that area of the image will move up & down with the image.

Don't know the technical reason for that happening, but for a while I had a second hand IPS monitor that was on its last legs and some regions of a monochrome image with a certain level of brightness/luminance seemed to have a very slight color cast.

fwiw, this might be of some help: http://www.lagom.nl/lcd-test/

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