Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] Feature Requests => [C4D] Resolved Feature Requests => Topic started by: fabio81 on 2016-10-25, 11:13:23

Title: problem intensity light
Post by: fabio81 on 2016-10-25, 11:13:23
Hi,

I find it a problem about the intensity of the lights. usually in vray it imposed a value in lumens, and that value remains fixed regardless of the size of the light, and rightly so. In corona it is not so, if you keep a multiplier 50 in a 5x5 cm light, that value distinctly different in a 100x100 cm light.
This is critical to have a proper scale and proportion of the light intensity and it is important to have a realistic result of the scene
Title: Re: problem intensity light
Post by: cecofuli on 2016-10-25, 12:34:11
In Corona, you must to use Lumen too, and not the default units.
Title: Re: problem intensity light
Post by: fabio81 on 2016-10-25, 12:54:41
It is right Cecofuli, but in cinema 4d is not yet possible because it is not the function lumens but only multiplier
Title: Re: problem intensity light
Post by: cecofuli on 2016-10-25, 13:39:13
Oh, sorry, didn't see it was Cinema ^__^
You cannot do nothing. You must to wait for lumen parameter =)
Title: Re: problem intensity light
Post by: fabio81 on 2016-10-25, 14:07:16
Oh, sorry, didn't see it was Cinema ^__^
You cannot do nothing. You must to wait for lumen parameter =)

I hope that the team Corona add this parameter in cinema 4d
Title: Re: problem intensity light
Post by: AnnoFT on 2016-11-13, 15:20:34
You can create an object and add it a Corona light shader, where you can adjust the intensity of a light. It's pretty like using mesh light in Arnold.
Title: Re: problem intensity light
Post by: houska on 2017-04-25, 13:02:18
Hi, the intensity parameter specifies differential radiance per meter and steradian, so of course it scales with a larger light. Right now, Corona for C4D allows you to set the light intensity in photometric units like candela, lumen or lux and these should behave correcty with scaling.