Photometric Lights Samples noise in Rendering

[NeWAcEiN]

hello guys i have done some test renders and i found that Photo metric Lights samples gives small white noise on objects so how to get rid of it ?

cause more samples will take longer to render !!!!!!!

[datacrasher]

Can you upload an image, are you using any other lights with the photometric lights are your shadows turned on? try turning off the shadows!

[NeWAcEiN]

i use daylight sys outside and inside the room i used photometic ligths shape is visable 32samples dimming on light col. is white so in render in some areas i get white noise (below/near )lights

[NeWAcEiN]

[ATTACH=CONFIG]45157[/ATTACH] chk this image and comment:confused:

[datacrasher]

weird i have never seen that before once i use the daylight system i switch to external daylight Logarithmic then render Soumitra, maybe it's because your using the photometric lights with the daylight system. Now to think are you using any glow effect in your scene? if not when you delete the daylight system or the photometic light now it go away?

[NeWAcEiN]

yp it goes away

ill explain the problem in depth say i have nice room mr sun&sky outside light portals on windows photographic exposure preset is selected in that daytime interior is selected now i have a ceiling which has light openings say 2 lights. here no i add photometic light turned shape visible on samples set to 32 shape visible is on dimming is on now when i render the image wherever i gave glossy satin materials lights gives noise NOW WHAT CAN I DO??????????? or what i m not doing right????

[CJI]

I have come across this before. I narrowed it down to the visible light setting and regardless what i did i still got spotty noise everywhere. I was on a deadline and so my solution in a pinch was to turn the visible light shape off (just the visible light shape though not the light itself) and replace with simple geometry placed over the light. I applied a simple A&D shader with glow turned on, with "illuminates the scene" turned off. I may have also turned off casts and receives shadows in the object properties. This way you avoid huge render times trying to clean up the noise.

 

Hope that helps

 

Meant to add, you then just add the glow aura in photoshop.

[NeWAcEiN]

I have come across this before. I narrowed it down to the visible light setting and regardless what i did i still got spotty noise everywhere. I was on a deadline and so my solution in a pinch was to turn the visible light shape off (just the visible light shape though not the light itself) and replace with simple geometry placed over the light. I applied a simple A&D shader with glow turned on, with "illuminates the scene" turned off. I may have also turned off casts and receives shadows in the object properties. This way you avoid huge render times trying to clean up the noise.

 

Hope that helps

 

Meant to add, you then just add the glow aura in photoshop.

whoa thanks buddy u saved my time on R&D i have one more question i get bright hot sopt around the light where in which i m unable to see the light source . i have to submit the output as fast as i can so pls help me out the light is on the wall not on the ceiling so i cant chop it of by changing cam location

[CJI]

Not sure what you mean. Screenshot would help. If you used the glow material the light geometry will be pure white or at least a solid shade.

[NeWAcEiN]

i mean lights intensity creates bright hotSpot around light

[CJI]

Well if its an exposed fixture you will get a hotspot surrounding it. try directing the light using a spotlight, or you could use a photometric web to achieve a more realistic wash against the wall.