I`m trying to achieve a very flat illumination on this plane, so that the center is the same color as the sides. I tried with dome light and rectangle light with no succes.
Any help would be greatly appreciated.
Thanks!
You could use a V-Ray Rectangle Light and enable the ‘No Decay’ parameter in the ‘Options’ rollout to produce the desired effect.
You don’t have camera vignetting enabled by any chance?
Yeah, that`s it. I could have spent another day without thinking at vignetting 
Thanks!
You’re welcome!