Andrey Tarasevich wrote:
I still don't understand what you mean by this. Specifically, what does "displays photos in the ProPhotoRGB color space" mean? How do you display some photo in a specific color space?
The Histogram and numbers when not soft proofing are in MelissaRGB which is like ProPhoto RGB. It uses the same RGB primaries but instead of a 1.8 Tone Response Curve it uses a sRGB like 2.2 TRC.
The previews in Develop should be in Adobe RGB (1998) unless something has changed I'm unaware of. This is for previewing nothing more (well you can send this out as Draft print).
When you are not soft proofing, you're therefore viewing an Adobe RGB preview with MelissaRGB numbers while LR is using neither when processing the data. ALL these previews depend on the quality of the display calibration and the profile that describes that behavior.