Problem
Blender 2.9 seems to be set up for large, meter sized scenes and objects. However, I was just creating a scene with centimeter sized objects and got basically no visible shadows. I had to put numerous sliders down to very low values to even get anything to show up.
A beginner would have a very difficult time to figure this out, since most of it looks like “magic numbers”.
Solution
On new file creation you should be presented with the following options:
- Centimeter sized scene
- Meter sized scene
- Kilometer sized scene
This should then set the units accordingly, set the ranges of all sliders accordingly and set the inital values of all lights accordingly.