i am having an issue with the spec options. After reading the docs it says:
-that spec color should be left to wight
-it is advised to keep the default spec settings.

i did many tests and it seems that:
-a default spec color of 1 is less convincing 0.5.
-the default spec settings gives a very "plastic" look to the car.

http://www.youfile.net/download.php...7b5c1cc5e2e6b0b


any guidelines regarding the spec settings?
notice in the black example, how the render with 0 spec is way more convincing then the one with spec