It seems to be possible with version 4 profiles
There is a version 4 sRGB profile here
Trying it back and forth, it does not seem to work for the conversion ProPhoto RGB to sRGB.
No merits of this version 4 profile are observed compared to ordinary sRGB IEC61966-2.1.
Thanks for the link though.
Am I doing something wrong ?
Example for reference:
> the left image was left in ProPhoto RGB
> the right image was converted RelCol to ordinary sRGB
Its well visible on (my) screen that some image details are getting lost upon conversion.
By no means of the version 4 sRGB profile and its Perceptual RI was it possible to prevent this.
Hope it can be seen with the attached screenshot:
for the purpose of clipping it in here, the screenshot was pasted in a new file, monitor profile was assigned and then converted to ProPhoto RGB again. So the attached file is in ProPhoto RGB.