HDRI - lighting

[strahlentherapeut]

O. k.,

thanks a lot. Then I can calculate it a little.

[strahlentherapeut]

Hi,

can somebody explain me this effect?

Border rendering after 20 minutes (2000 spp) for testing when the edge of the glass becomes sharp. Edge with sharp details.

test.png (24.12 KiB) Viewed 190 times

The original pic after ca 3000 spp! You can see the blurry details in the red squares!!? It is the same scene!

Fazit: The parts from border render have more details after the same time. ( even earlier)

[Pilchard123]

I notice the wiki page on border rendering says there is no way to add samples to a particular area of an image? Why is this?

It doesn't seem like it would be too hard to do, and would be very useful for clearing up those areas that are particularly noisy or have lots of caustics.

Would it introduce bias or something? If it would, could it not be just added to the samplers that are biased by nature, and not the unbiased ones?

[SATtva]

Pilchard123, this was discussed infinite number of times already. See for example: viewtopic.php?p=75397#p75397

[Pilchard123]

Ah, so it has been. My apologies, I should have searched.

[strahlentherapeut]

Hi,

I dont want to add this. It should be just a test, what happens with the pic after 10000 spp you know? Like a time lapse. To see if the noise goes away
And then - this effect. The edge in the border render seems to be sharp. Earlier than in the whole scene

[SATtva]

Here's around 60 kS/p: gallery2.php?g2_itemId=17198&g2_imageViewsIndex=1

[strahlentherapeut]

Hi,

nice render. 60 ks are very much. Too much for my machine. According to the motto - samples do not matter. Only the results counts No seriously, I have no problem with long render times. Basically. I just want to know: Is it theoretically possible. Perhaps the scene is wrong. Or the settings. When I can be sure that the noise goes away. no problem.
Can I be sure

[zeealpal]

If the majority of the lighting is from the HDRi light source, I think (someone correct me if im wrong ) you can increase the importance of the Hemi lamp, to perhaps 3, so it receives more sampling compared to the other light sources

[strahlentherapeut]

Hi,

I use blender 2.49. I believe there is no hemi lamp in conjunction with HDRI.