OTOY Forums

prooq wrote:I guess the scene is alright, 8000spp is just quite a lot.
I rendered it on my 8800gts for 20 minutes to 1000spp and couldn't see a difference between your image and mine after some noise reduction in photoshop…

(also the mugs are pretty polygon heavy, but that does not decrease the performance as far as I can tell)

Thanks for your test, can you post the result? I'm about to test it on 1000smpl myself..

Sure: This one was rendered on 4x the resolution (20 min for ~250spp), then denoised and downsampled. However rendering at higher res didn't help to much this time.
I didn't reduce the noise in the left half so you can see the denoiser (Dfine) did quite some work, but i think the result is good.

Thanks again, this is another shot at 2000Mxsamples and denoise once....I will test again 4x myself and downsample for a quick test myself...

The second one is 7.46 min which is indeed another story..

and the one above is 2048x1536 at 500 samples downsampled to 1024x768 denoised, 7mins 09 same result....

Fine now, is just that I wanted to see a final an totally noise free picture out of the box but glossy on White does not help much...good test overall.

Well, I don't know how you reduced the noise, but it's not too convincing in my eyes:
The highlights on the edge of the mug and on the handle are darker and have a slight halo around them.
It ain't bad, but perhaps you can improve that.

Edit: Ok, on the other side the sharpness of the edges is better with your denoise method…

prooq wrote:Well, I don't know how you reduced the noise, but it's not too convincing in my eyes:
The highlights on the edge of the mug and on the handle are darker and have a slight halo around them.
It ain't bad, but perhaps you can improve that.

Edit: Ok, on the other side the sharpness of the edges is better with your denoise method…

Well there's always room for improvement, denoised with the common Photoshop denoiser (next I will try Topaz denoiser, it seems to be very good) actually I checked the saved file and realize that from the 8000 to 2000 the roughness has been lowered to almost null, (originally 0.0010141) not that it was any higher, I don't think it change the picture so drastically, maybe is that what cause the sligh difference? Anyway,,thanks for your analysis, it helps for a future render, tecniques and samples etc...though any picture has his own story...and materials

one thing that you should do is never use pure white.
eg 1 1 1 in an rgbspectrum.

always use realistic reflection which is .8 or .9, that will help a lot with the noise.

Radiance

radiance wrote:one thing that you should do is never use pure white.
eg 1 1 1 in an rgbspectrum.

always use realistic reflection which is .8 or .9, that will help a lot with the noise.

Radiance

Thanks for your advice, .8 .9 roughness? now i'm going noob

When I switch to glossy I have the default settings and as you know the roughness value is Specular 0.200 and roughness 0.0010000 ( ) and this last is a bit confusing in scaling up the values

justix wrote:
and this last is a bit confusing in scaling up the values

same here, in previous version, roughness scale had more sense..

justix wrote:

radiance wrote:one thing that you should do is never use pure white.
eg 1 1 1 in an rgbspectrum.

always use realistic reflection which is .8 or .9, that will help a lot with the noise.

Radiance

Thanks for your advice, .8 .9 roughness? now i'm going noob

When I switch to glossy I have the default settings and as you know the roughness value is Specular 0.200 and roughness 0.0010000 ( ) and this last is a bit confusing in scaling up the values

i'm talking about diffuse and specular reflection values, not roughness...

Radiance

radiance wrote:

justix wrote:

radiance wrote:one thing that you should do is never use pure white.
eg 1 1 1 in an rgbspectrum.

always use realistic reflection which is .8 or .9, that will help a lot with the noise.

Radiance

Thanks for your advice, .8 .9 roughness? now i'm going noob

When I switch to glossy I have the default settings and as you know the roughness value is Specular 0.200 and roughness 0.0010000 ( ) and this last is a bit confusing in scaling up the values

i'm talking about diffuse and specular reflection values, not roughness...

Radiance

Oh...thanks..I think it's late for me now...my brain is octanized now.....