Circular Lighting Artifacts
26286
Rendered image shows visible "line strokes" artefacts
104117
Render has strange artifacts
74020
Curve Object Deformed by Curve - Distortions (Artefacts)
80087
How to create a strong halo light effect?
46069
How to do volumetric lighting for a forest scene?
135594
Spotlight with Halo applied is creating rings around light
71468
How can I acheive a smooth 2D lighting effect?
107832
Cycles: Emission Shader does not bring enough light
152651
Generating visually pleasing circle packs
79962
Jagged/Black edge artifacts when modeling
27616
Make Object emit light & be reconizable
49026
How to find circular objects in an image?
33817
Cycles material node set-up for diffuse, specular, reflection/refraction, normal and illumination/emission map
100527
What is causing the strange lighter circles in images taken with my Canon 15-85?
107970
Laser, wire, and a circle of light
134911
changing the intensity falloff of light sources using Cycles nodes
101342
Deep confusion with conventions and signs in geometric optics