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help with noise....

Posted: Fri Dec 12, 2008 12:56 am
by marked001
anyone have any recommendations for a material for this plastic on the lights? i tried a blue ags, but it didnt show up really..any tricks like making the flat portions ags and the outer edge a plastic?

i havent touched this in awhile and i'm not on a machine with maxwell at the moment, so i cant remember exactly what i'm using everywhere... but right now i think the fins in the light are a plastic mxm that i downloaded from the mxm gallery and altered the color... i tried using the new sss wizardl, but similar results. the emitter in each is two rectangles...which, now that i think about it..may interect each other...could this cause a problem?

thanks in advance.. (obviously, any other advice is greatly appreciated)

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Posted: Fri Dec 12, 2008 11:02 am
by def4d
never intersect emitters!

Posted: Fri Dec 12, 2008 3:08 pm
by marked001
yes! i checked it out and it wasnt the case..i didt think i was that dumb..haha.. the emitters are 3 rectangles in each fixture

Posted: Fri Dec 12, 2008 3:21 pm
by def4d
could you post a blow-up render and wires?
as my english is not that good, i'm not sure to understand your description

Posted: Fri Dec 12, 2008 3:28 pm
by marked001
i can try to later again... not on the correct computer.

to describe..the emitters in each fixture are basically an extruded triangle... with those three planes as emitters.. so a triangle in plan..

Posted: Fri Dec 12, 2008 3:35 pm
by def4d
ok, i think i see, and those emitters intersect with nothing?

Posted: Fri Dec 12, 2008 3:36 pm
by marked001
no..they are independent of everything. i think the plastic material has to be the culprit...

Posted: Fri Dec 12, 2008 3:47 pm
by def4d
For the plastic, i would use a standard glass (no AGS, no SSS)
Are the emitter enclosed in a glass cylinder? It seems there's something around them, if yes put them off

Posted: Fri Dec 12, 2008 3:48 pm
by marked001
i havent tried standard glass...i will give that a go.. .there is no glass around the emitters... they're inside a metal cylinder with a few slots...

Posted: Fri Dec 12, 2008 4:54 pm
by def4d
As the fixtures produce a lot of caustics, try to Hide the plastic part from GI
You will loose the real effect, but decrease noise and render time
See here, normal glass :
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And Hidden To GI:
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Posted: Fri Dec 12, 2008 5:38 pm
by marked001
thanks so much for running that test! really appreciate that.

i do not know how to hide a material/object to GI though... can you let me know how? thaks... again, appreciate all the help.

Posted: Fri Dec 12, 2008 8:47 pm
by marked001
nevermind...i see it in the plugin.never used it before.. thanks.

Posted: Fri Dec 12, 2008 9:49 pm
by def4d
:D

Posted: Fri Jan 09, 2009 10:15 am
by def4d
results? :(

Posted: Fri Jan 09, 2009 3:23 pm
by marked001
i never posted the result! sorry..i swore i had...whoops :)

nothing spectacular, but hiding it to the GI definitley helped! thank you.

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