Car Head Light Glass, what's the best setup for Cycles?

See the image without glass and with glass, what settings for the glass to avoid issues?


See how dark it got, I’m new to Blender and I need some clues.

It’s just a glass BSDF shader with normal map.

Enable caustics or modify glass material.

https://docs.blender.org/manual/en/dev/render/cycles/optimizations/reducing_noise.html#render-cycles-reducing-noise-glass-and-transp-shadows

Enable Non Color Data in the image texture input do you think? Am I always mean’t to do that for normal maps?


Or, try adding an emission shader…


You can also try disabling the shadow ray of the glass, so that it doesn’t cast shadows. That should brighten things up slightly. Simply go into the Object tab and under Cycles Settings, uncheck Shadow.