Interior scene long render times.

[Karba]

I had tried switching to PMC but the render times jumped at least another 20 min.

But noise should go away faster.

[Polarity]

But noise should go away faster.

Hi Karba.

Does this mean I'd be able to lower down the samples when using PMC to achieve a noiseless image? Also I need to ask....does my light samples have anything to do with it? I have always kept them at a default of 1.0.

[Karba]

But noise should go away faster.

Hi Karba.

Does this mean I'd be able to lower down the samples when using PMC to achieve a noiseless image? Also I need to ask....does my light samples have anything to do with it? I have always kept them at a default of 1.0.

Yes, very likely you need less samples for pmc. Light samples don't make a lot of sense in your case.

[Polarity]

Yes, very likely you need less samples for pmc. Light samples don't make a lot of sense in your case.

I changed the kernel to PMC and the sampling rate to 6000 just to test it. It seems as if I'm starting to see a huge improvement already. I just have to wait to see how long it takes me to get something near-noiseless. Thanks for your help!

[Polarity]

Here is the updated image rendered via PMC with 10000 samples with 28 min rendertime at 1024x663. I replaced all the ceiling lights with blackbody emitters and actually have a cleaner result in quality and noise. Huge improvement, but still not amazing time-wise. I feel this is somewhat workable now and can definitely add a denoiser in post, but it's higher resolutions I am more worried about. Do I have any options in regards to doing further optimization or is Octane not yet completely interior friendly?

[gabrielefx]

buy a system with 4 gpu, this is the only way

Imagine to render this scene with vray and bruteforce set to 24 - 3
also set dmc sample set to 1 - 16
also noise threshold set to 0.005

your system will render for 8 hours, more or less.
I don't see any noise in your render, it's ok.

Btw, every photographer that shoots interiors always use a lot of tricks, flashes, lamps, banks, post-production, etc.

The most powerful ccd sensor generates grain in low light conditions (Hasselblad).

[Polarity]

Imagine to render this scene with vray and bruteforce set to 24 - 3
also set dmc sample set to 1 - 16
also noise threshold set to 0.005

your system will render for 8 hours, more or less.
I don't see any noise in your render, it's ok.

Btw, every photographer that shoots interiors always use a lot of tricks, flashes, lamps, banks, post-production, etc.

The most powerful ccd sensor generates grain in low light conditions (Hasselblad).

My motherboard supports 4 GPUs but heat is something I'm worried about. I would have to spend some money and resort to liquid cooling unfortunately. I tried using 3 cards in there already with their stock coolers and the heat was just way too high, even with my well ventilated case. I was extremely scared for my hardware.

[gueoct]

..... I feel this is somewhat workable now and can definitely add a denoiser in post, but it's higher resolutions I am more worried about.....

i am using this technique too, since i read about it here: http://render.otoy.com/forum/viewtopic.php?f=21&t=878
it´s definitely worth it! why worry about higher resolution? you get much more detail and de-noise it later. even if you double
the render size, you still get better results in a reasonable amount of time...

[gueoct]

01 tiny geometry/light emitters generate too much noise. Try to enlarge them or balance them increasing samples.

In my scene http://render.otoy.com/forum/viewtopic.php?f=27&t=27515
i am using IES lights and skylight through a relatively huge opening without glass.
Any idea why the image got sooo grainy?

[foxid]

01 tiny geometry/light emitters generate too much noise. Try to enlarge them or balance them increasing samples.

In my scene [url]http://render.otoy.com/forum/viewtopic.php?f=27&t=27515
[/url] i am using IES lights and skylight through a relatively huge opening without glass.
Any idea why the image got sooo grainy?

IES is very noisy