[Sylvain]

I don't have an Olympus, but I've seen some problems with Lightroom and my Sony NEX-6, solved by means of profiles. There's something I don't understand about your post: are you saying that Lightroom 5.3 changed the way it renders colours for your camera?

 

Hi, Adobe used to provide only a "standard" profile that is Adobe's way of processing RAW. They have their own method of measuring and profiling that may not give the intended camera manufacturer rendering. For example, mfcter x renders red very saturated, green with a yellowish cast etc but Adobe, as long as they don't provide this, leaves you only with their "default calibration", not a bad thing per se...

 

In the case of the E-P1, while visibly different from Olympus rendering intent, I didn't find the Adobe profile to be "wrong". But with the E-M5, some colors were just completely off the board. The blue of skies turned violet and some yellow & orange had a pinkish tint. In a repeatable fashion. The new camera profiles Adobe provided try to match Olympus rendering intent more closely. Indeed, they are closer. So you have the choice in the calibration panel to use Adobe default rendering or from different Olympus profiles (Natural, Vivid, Portrait, ...) as found on Olympus cameras.

 

Hope this helps,



Sylvain