Hello All
I'm currently learning the art of lighting in Blender. I'm trying to make sense of the following parameter:
Default Blender scene, Default Blender light-source (point), Blender Render engine
Its Energy parameter = 1 <one>
Default Blender scene, Default Blender light-source (point), Cycles Render engine
Its Energy parameter = 100 <hunderd>
My questions:
A - Why does the exact same light source (situated inside the exact same default scene)
have different values in Blender Render and Cylces render?
B - What kind/type of energy is regulated by it? (in which amounts / units?)
C - Does this value represent any science"-based light-strenght parameter like:
- https://en.wikipedia.org/wiki/Light_intensity
- https://en.wikipedia.org/wiki/Lux
or.... is this just a randomly chosen render-algoritm input value with which one has to fiddle around with until one gets the light right, through the process of trail, watch render output and error and try again?
D - Where can I find more background information about both Blender rendering processes?
Here's an article that does a better job of explaining Cycles lighting values than I can: https://blendergrid.com/news/cycles-physically-correct-brightness
Usually though I just use whatever looks best artistically, using a histogram and the filmic false color as my guides.
Wauw.. This was exactly what I was looking for!
Cycles light info blendered with the right kind of lux-science-facts.
Thanks for the reference to this article and the BlenderGrid website!
@jlampel I'm wondering: can you use a histogram while tweaking the light (i.e in the viewport) ? Or do you need to render first and check the histogram then ?