Room lightning tip?w

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portgas
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Joined: Fri Aug 26, 2011 5:32 pm

Hi guys. I want help with my project, i'm doing medieval room with sunlight coming from windows and it's pretty complicated with lots of stuff. So when i'm using pathtracing or pmc the whole scene becomes very dark and very slow. So, how can i improve lightning without having it messing up with whole "only sunlit" enviroment? Thanks.
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gabrielefx
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portgas wrote:Hi guys. I want help with my project, i'm doing medieval room with sunlight coming from windows and it's pretty complicated with lots of stuff. So when i'm using pathtracing or pmc the whole scene becomes very dark and very slow. So, how can i improve lightning without having it messing up with whole "only sunlit" enviroment? Thanks.
windows have colored glasses?

if not hide the glasses and the sun will shine through

A real photographer uses always banks (rectangular lights). Think real with Octane.
Put behind the camera two flat panels with a diffuse+blackbody emitter mats. Create one cylinder and put inside an illuminated flat circle (the emitter), you will create pars (spot light with fresnel lens).
With spots, area lights and the sun you will illuminate well every indoor space.
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kubo
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also to gain some extra Ms/sec add portals to all the windows, and check the geometry for leaks, those will slow your render times, in a similar scene I went from .1 to .17 Ms/sec with those two things.
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portgas
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Joined: Fri Aug 26, 2011 5:32 pm

Thanks guys, diffuse lights behind camera definitely helped. But it rendering a bit slower with portals for some reason.
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