Hi I have a small question about the new 4.19 physical lights, the new version has changed the intensity to a choice of Candelas, Lumens and Unitless. I understand the difference between Candelas and Lumens, and that Unitless is the old 4.18 and older system, but in 4.18 and older I thought the intensity was a direct value of lumens if inverse square falloff was turned on?
If this is the case then what is the difference between the new Lumens and the old Unitless? I have tested a point light in the exact same scene in 4.17 and 4.19 with point lights with 1700 intensity/lumens, in the 4.19 scene the new Lumens setting is a lot brighter than the 4.17 scene. Of course if I switch the light to Unitless they become the same. What is the difference between the 2 models? If the 4.19 lighting model is the 'correct' physical lighting model, does that mean that 4.18 and older were using a wrong model?
Anyone know what the difference is between the new lumens and the old 4.18 lighting system?
If this is the case then what is the difference between the new Lumens and the old Unitless? I have tested a point light in the exact same scene in 4.17 and 4.19 with point lights with 1700 intensity/lumens, in the 4.19 scene the new Lumens setting is a lot brighter than the 4.17 scene. Of course if I switch the light to Unitless they become the same. What is the difference between the 2 models? If the 4.19 lighting model is the 'correct' physical lighting model, does that mean that 4.18 and older were using a wrong model?
Anyone know what the difference is between the new lumens and the old 4.18 lighting system?
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