Some shadows are too sharp in the render
182
Some areas of the mesh are dark (Shadow artefacts)
48144
Casting shadows for transparent textured material
30941
Point Renderings Slightly Off in Mathematica
92649
Rendered image is not as smooth as in 3d preview
70814
How can I maximize the "blurry background, sharp subject" (bokeh) effect?
17644
Hair renders different than the preview
26362
Low-res texture blurry
44951
Subsurf Modifier artifacts
101972
Hillshade results look too grainy
154227
Cause of Alpha or Black Artefacts in Render
154838
How can I avoid colored light reflections?
144162
Compositor Problems when working with alpha over and blur nodes
89564
How to create 2D shadows
121397
Why is my render noisy/blotchy?
8568
How to get rid of internal shadows/blackness in glass/transparent/refractive materials?
76067
What's wrong with my render?
66154
Distorted shapes/lines when rescaling - tried previous answers