Edit 27/7/2019
Please post in this thread all your general ideas and suggestion about lighting challenges
If you have built an original scene that you’d like to offer for a future challenge (or know a person or company who could offer a scene), please mention it here, preferably with a picture.
Many of the challenges should be “simple” scenes - scenes that people could light in many different programs, or that you’d use as a test if you were getting yourself going with new software.
Some of the challenges should reflect common challenges of lighting in production, such as lighting animated characters, integrating 3D objects with real environments, dealing with hair, fur, reflection, transparency, water, etc.
If you have any request or other ideas about lighting challenges, this is the place!