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Whats causing this?
Hey since im fairly new to C4D im not nearly as comfortable with the render setting as i am with other 3d apps, and im sure thats where the answer to this question lies.
I have that lens built in a seperate project and it renders out fine as you can see…but why whenever i bring it into my main scene as an xRef do i get that strange grain in the lens? And how do i fix this?
Solo Render
Master project render
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7 Replies
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actually after seeing these side by side it seems to be how the lens is reacting to the lights…and i just dont have as much light set up in my solo scene, but still dont know how to fix it.
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the angle of the camera to the lens is different from the solo to the xRef image. Do you have a texture with anisotropy in it somewhere on the lens? That’s a little like the effect you get on a spherical object with direct lighting and radial anisotropy… either that or random noise… hard to tell without the scene.
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I dont have the scene on me right now, but i started with one of the glass c4d material presets for the lens, and changed mostly the volume,surface and specular colors, also played with the transparency so there are no actual “textures” loaded onto the shader. The first thing i checked was to see if there was a noise on any property of the shader but there isnt.
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the only other thing I can think of at the moment is that is sort of the look you get when two transparent objects share the same space – like using a copy of the inside of a bottle for the liquid inside the bottle you have to scale the liquid up or down a bit or you get ‘clashing’ since they both occupy the exact same space. That is usually not angle dependent though…
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hmm, thats good to know for the future but isnt the case here. I do have multiple lenses in there layed out as in a real projector, but theyre not even touching. Well ive figured out a workaround, its all ending up in an AE comp anway so im just using the solo render, but would be nice to know what caused it in case i run into it again. Im %99 sure its a light sensitive problem, because you can faintly see it happening in the solo render as the glare from the lens casing hits the lens, but thats the hardest light in that scene as opposed to my Master Project with a hard 3-point lighting set-up.
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yeah, I didn’t think so… I’d have to see the scene at this point – not that you can put it out there – I’m out of guesses…
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Are they actually Spotlights? If they are set to omni with out any fall off everything will be lit.
/randy
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