I have been working in Maya 2016 for a couple of months now and always used the old Color Management workflow. Color management is turned of in the preferences and all my textures with color information are connected through a gamma correct node. For the final render I brake the connection with the lens shader. When saving as an OpenEXR file I get the following result in Photoshop (sorry for the low quality):


So after seeing your video I thought I should should give this new Color Management a try. I deleted all my gamma correct nodes and turned on Color Management in the Preferences leaving everything on the defaults. But now I get this result:


It looks as if all my lights are way too bright.
Shouldn't my render look exactly the same as before? Or did I miss something crucial?