Have light cast on an object visible, but the the object to be invisible Does anyone know how to achieve the effect of having a light cast upon an object, yet for that object to be invisible when rendered, yet the light that is cast upon the object is still visible?
I've tried experimenting with the Light Path Node, Mix Shader Node, The Object Properties/Visibility Tab, but with no success - it is an obscure thing to ask for I suppose...
If this isn't clear I can rephrase!
I'm working in 2.90.1 and in Cycles
Thanks!
I know you want it in Cycles, though you can do it using Eevee:

The node setting:

The key point is to use &quot;diffuse&quot; and &quot;shader to rgb&quot; (the left part). This is some kind of preshading that allow to test the light intensity. This result is then tuned through a colorramp to mix between the lighted and transparent parts.