This sounds like an issue with your monitor profile. Try the suggestion at the below link
Hi and thanks for your answer but that is not the problem because when I put the picture up on another application all is good and I have the problem just in Lightroom ...
Most other applications don't use the monitor profile.
In addition, Lightroom is very sensitive to defects in the monitor profile, so the image could look OK in Photoshop (which also uses the profile), and bad in Lightroom.
So try setting the profile to sRGB
You should also update Lightroom 5.6 to 5.7.1. Keeping Lightroom Up-to-Date
This not uncommon and usually due to using a monitor profile that is incompatible with LR, but compatible with other applications. I suggest trying LR with the sRGB color profile if using a standard gamut display or Adobe RGB if using a wide gamut display.
If this doesn't make the Library and Develop previews look the same please post a screenshot of both and tell me what camera model and operating system version you are using.
I also suggest updating to the latest and last update for LR 5:
I just note that the problem is just on my last pictures and not on the old... So I tried with my father's mac and no problem on the pictures.... I don't understand
Okay, after a rebut of my PC (Not the first) everything is good Oo Just a little difference of luminosity between the Library and the Develop but I think is because of the RAW, no ?
Just a little difference of luminosity between the Library and the Develop but I think is because of the RAW, no ?
Library and Develop should display identically.
When they don't, it is usually caused by a defective monitor profile.
So did you try setting it to sRGB (or Adobe RGB for a wide gamut monitor)?
And did you update to 5.7.1?
I tested all the previous links but I didn't find the sRGB, I found Adobe RGB 1998...
And yes I'm on 5.7.1 now
The sRGB profile should be there.
Please tell us your operating system and version.