Which side looks more real? (Spectral rendering experiment)

CHWT

Experimenting with spectral rendering (yeah I know I am super late to the party but spectral rendering does lengthen rendering time a lot in my case) One side in both images have spectral rendering turned off while the other side have spectral rendering turned on. I just want to know which side in both images do you guys think looks more real... or you do not see any difference at all. Thank you for your help.

Havos

I am guessing the one on the right is spectral, but the difference is really small, and I would not say one looks any better/more real than the other. To be honest I am not keen on either render, the skin looks sort of stretched and/or low resolution, particularly on the forehead and close to the nose. That is either a poor texture, or it is the light washing out some of the details.

nonesuch00

I know for a fact that the right side with less glossiness is the spectral render side but consider this: the PAs make renders as ads and when they do that they make high gloss and high contrast renders and by spectral rendering you are doing the opposite of that.  Anyway, the difference is inconsequential to most viewers so if spectral is adding much render time you don't want that much time lost to rendering spectral when the end result is debatable as to whether it's even noticably making your art look better.