Blotchy small mesh lights

[Phil_RA]

Hello,

I'm taking my first steps with Octane. I'm currently making a lamp, where some lights hang at the end of splines. After failing at making a proper translucent glass material (I'll fiddle around with that again later), I decided to make each bulbs a mesh light. The bulbs are basically chamfered cylinders, but I'm wondering why in the render they appear so blotchy? Each cylinder is smaller than the spline it is connected to, yet it appears roundrish and much larger.



I doubt the issue is Max specific but I wasn't sure where to ask.

Thanks for your time.

[Karba]

Hello,

I'm taking my first steps with Octane. I'm currently making a lamp, where some lights hang at the end of splines. After failing at making a proper translucent glass material (I'll fiddle around with that again later), I decided to make each bulbs a mesh light. The bulbs are basically chamfered cylinders, but I'm wondering why in the render they appear so blotchy? Each cylinder is smaller than the spline it is connected to, yet it appears roundrish and much larger.



I doubt the issue is Max specific but I wasn't sure where to ask.

Thanks for your time.

The bulbs are to bright. Even very small blur makes them visually bigger. I would use glow and glare to show their brightness.

[Phil_RA]

Thanks for the help.

I ended up remaking the light bulbs, rather than rendering the meshes with black body emissive as bulbs themselves.

I use a mesh filament with blackbody emission inside a rough glass bulb. Problem is, with the number of lights I have, it's extremely long to render using such a method! The worst is if I do a close up, the rendering time goes up to 1.5 hour at 1600px x 940px and it looked like even with 16000 samples I would still have a highly noisy image so I didn't bother to wait. Maybe I'm doing something wrong? In this year old video this person had an average rendering time of 50 secs per frame: https://www.youtube.com/watch?v=4k0sOCf-1dU

Here is the result for now. For now I put this scene aside. I have 1 Titan only and hopefully it's something I can come back to later with cloud rendering.

[gueoct]

It´s not yout fault;
Octane has heavy problems with many and small light sources