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System units and Global Illumination

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art-MIXER:
Hello everyone, I have a question - is there a difference in the calculation of global illumination by using different system unit ? For example, if the scene is constructed in centimeters and the same scene is built in millimeters , will result identical to the final image , both in time and in quality ? Thank you all in advance for your reply.

Ondra:
no, no difference

art-MIXER:
Thanks for the answer. What about converting materials if a switch to millimeters centimeters, the radius of influence AO becomes 10 times more. It's sure to affect the calculation of GI

Ondra:
of course, also DOF changes with scene scale. But that is changing the scene input description, so it is logical that you will get different result. I was thinking you were talking about things like speed, artifacts, noise, etc.

art-MIXER:
Mostly I asked about it and - it was already passing second question)
Thanks for the clarification, just tortured me this question. I always convenient to design the interiors in millimeters, but what if somehow faster in centimeters or qualitative miscalculation. Now I am calm and I will work as before in millimeters.

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