Problem with 50%grey/Softlight and ColorSpace conversion

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  • Updated 3 years ago
Converting Color space from ProPhotoRGB to sRGB (and vice versa) with a 50% grey layer in mode "soft light" results in change of the the image.

Why this bothers me so much?
I start in Lightroom (CC) and edit the images in Photoshop (CC). Then color space ProPhotoRGB is used. I do a lot of D&B with 50%-grey-layers in "Softlight" mode. After finishing I save the psd file and go back to Lightroom. Then I do some exports as JPGs in sRGB. The images change somehow - thats the effect I show here in this little video:
https://dl.dropboxusercontent.com/u/8... obesupport_720p.mov

Is there an other way to do D&B (Dodge and Burn) which is more reliable while converting color spaces?

Regards,
Knut
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Knut Haberkant

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Posted 3 years ago

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christoph pfaffenbichler, Champion

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If you expect to achieve a particular appearance for a layered File in a particular Color Space work in that Color Space or convert a flattened Copy (or, as long as the image is RGB, convert the whole of the Layers to a Smart Object and convert the containing Document).
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christoph pfaffenbichler, Champion

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When you create a 50% gray Layer in ProPhotoRGB the color is 128/128/128, when you convert that to sRGB is can (depending on the settings) come out as 146/146/146 – that naturally does not have the same effect with that Blend Mode.
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Knut Haberkant

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Thank you very much - great tip. Is there a setting for conversion, that leads a 128/128/128 to a 128/128/128 ?
If I understood you right: If I flattened the image - the conversion does not lead to a changed look?! Does Lightroom conversion on a flattned image (PSD)?
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christoph pfaffenbichler, Champion

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If 128/128/128 would result in 128/128/128 in this case it would practically not have been converted but just assigned the other profile.
The color is of different luminance in those two Color Spaces.
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christoph pfaffenbichler, Champion

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»If I flattened the image - the conversion does not lead to a changed look?«
As far as it is possible for the two color spaces and the settings chosen the appearance is maintained for a flattened image.