Chaos Corona Forum
Chaos Corona for 3ds Max => [Max] General Discussion => Topic started by: BlessOd on 2013-09-04, 15:40:36
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Hi.
When Ondra added support for photometric lights I decided to compare lumens with CoronaLightPoint
(http://clip2net.com/clip/m59760/thumb640/1378298112-light-test-96kb.jpg) (http://clip2net.com/s/5GLCOA)
it turns out that one coronaLightPoint is 3.72 lumen
maru: that does not make sense yet, because there is no physical camera
Yes, but I decided to find out.
if the exposure compensation (EX) = 0 which parameters can be in a real camera?
having as a reference photometric lumens
downloading maxwell
I set the intensity to 476 lumens (128 CoronaLighPoint)
(http://clip2net.com/clip/m59760/thumb640/1378299565-test_light_maxwell-95kb.jpg) (http://clip2net.com/s/5GMkgi)(http://clip2net.com/clip/m59760/thumb640/1378299953-test_light_maxwell_ex1-100kb.jpg) (http://clip2net.com/s/5GMvTv)
EX increase on 1 increases the shutter speed by half
so if you take the f/stop(5.6) and ISO(100) as a constant, then EX = 0 gives a shutter speed 1/4s
the same with the ISO if the increase is three times the shutter speed and reduce the ISO three times will be the same result
(http://clip2net.com/clip/m59760/thumb640/1378302275-untitled-2-51kb.jpg) (http://clip2net.com/s/5GNCPM)
These are my thoughts and decided to share. :)
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Good work bro! Thanx!
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just wait few days, and I'll put in real world units :D
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just wait few days, and I'll put in real world units :D
yahooo! that's incredibly cool news! thank u, Ondra!
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just wait few days, and I'll put in real world units :D
Woww thank u, Ondra!