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I'd like opinions here...not related to design, but rather, comments related to the noise present in the images...

Target samples set to about 35. Achieved 20 in around 40 hours. Still quite noisy!


Same settings here. Allowed to render only a few hours with the same result. Noise.

I believe the offending material is the green stuff you see in the images. Maxwell plastics used here with some scattering.
All metals have some roughness applied. Other plastics have roughness dialed in to avoid noise, so, I think it's the green stuff.

No emitters in the scene, although there are four hidden. They would have illuminated the inside areas of the green elements.
I hid them thinking that they might add to the render time. I was attempting to achieve a glow from the green elements much
like you might have if you used fluorescent tube lighting inside the green structures.

Comments please.

Steve

I suggest you try MXI emitters. Micha has achieved really great results with it: http://www.maxwellrender.com/forum/view ... +german%2A
I haven't tried them myself though.

johann.dugge,

Thanks for the kind reply about mxi emitters.

It's a bit more effort than I had intended to exert for a scene of this type.

The nature of the design requires a very quick and dirty lighting solution.
In order to be profitable in this design arena one must repurpose lighting
solutions over a great number of projects. I like Maxwell for a variety of reasons.
Chief among them is the ease of setup and execution. This type of lighting
works acceptably for me. I'd rather identify the material that might be adding
to the render time and find an acceptable substitution.

Perhaps someone else can comment on the material with scattering applied
and tell me if it is causing the scene to render longer.

Thanks anyway johann.dugge.

S

Sorry everyone!

I hadn't noticed that there are quite a few emitters in this scene.
Each of those stem lights has an emitter.

Now I'm very embarrassed.

Still...how about a few ideas on cleaning up noise.

SH

johann.dugge,

Sorry, I completely missed your point.
When I revisited the link you suggested I read
I discovered there may be some merit in your
appproach.
I'll try the scene again when time permits.

Steve

Good to see you around again Steven.

If quick and dirty is okay, why not just make the lenses a green-colored emitter? It will introduce green light, but I guess flo's behind green glass would do that to.

Frances,

Well yes, that would probably work.
I guess I've been so fixated on "correct" that I have overlooked the obvious workarounds.

First we had to forget about the realworld camera in 3D. Now we are forced to remember the basics of the camera.

I'm too old to learn new tricks I guess.

I'm not certain on this and i suppose i could do a quick test, but doesn't light still emit to the scene even when the actual emitter is hidden? ....thought i read that in a post somewhere. I could be way off. ....Fran?

Chris, I don't remember about hidden emitters, but I've never had that happen to me.

Steven, another thought is the size of your ground plane. That can increase noise.

Yeah, I thought of the size of the groundplane.
It's hugh too.