I'm pretty new with blender, I'm looking for a tool similar to this one for vray for 3ds max:


I aim to make the lighting calculation (measure the average lux on the floor of a room)



This is something quite similar:

enter image description here

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    $\begingroup$ No it isn't. It just looks similar. The colors are relative to the exposure settings, not to the light density on the surface. It is used for setting the exposure(or amount of light in the scene) since grey here should match middle grey so the purpose of it is completely different as well. This is a misleading answer. $\endgroup$ – Martin Z Jan 28 at 15:33

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