Can't figure out why this looks so grainy I'm trying to do a project for one of my classes and i keep trying to fix the lighting and graininess (if that's a word). I've already watched a ton of lighting videos by blender guru and how to fix fireflies and im pretty sure im missing some key parts to fixing this image so i was wondering if anyone knows some things to help me out.
These are the fastest ways.
If you are not in Cycles Render then switch to Cycles and on the Render Layer tick mark Denoising.



If that does not give you the desired effect then increase the Render Samples as well , at the Sampling section, but will increase your render time.



These two settings usually solve the problem.

Sometimes I find that unticking the Reflective Caustics and the Refractive Caustics will improve some scenes. These settings are under the Light Paths settings under Sampling settings.