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Poser - OFFICIAL F.A.Q (Last Updated: 2025 Jan 31 9:45 am)



Subject: Light imperfections


Sheedee ( ) posted Sat, 20 April 2013 at 6:10 PM · edited Fri, 31 January 2025 at 11:38 PM

file_493777.jpg

 

Some time ago i asked this same question here on the forum...but i forgot what the response was.

Its about these stains and imperfect renders i get on hard surfaces and edges.

As you can see on the inside of this door...there are black blotches in the creases.

I have tried just about everything in the render settings to solve this problem...but nothing helps.  Not even maxing out all the settings.

I am using a commercial light set, which employs 4 spot lights.

IDL is checked in my render settings...and so is Raytracing.  The rest is pretty much default.

I hope that there is a solution to this...because i would like my renders to be spotless and clean...and results like this for me are a total game stopper!...

Is Posers FireFly render not capable of producing better quality then this?...or does this have nothing to do with the FireFly render?...

I am using Poser Pro 2012

Please click on image for details.  

Thanks for viewing.  

 

 

 

 

 

 

 

 

 


DarkElegance ( ) posted Sat, 20 April 2013 at 7:08 PM

before you think poser is not capable..please look at the render on the first post of this thread.

http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2864118

it really shows that poser is fully capable of amazing renders.

what is your shadow bias set at?

https://www.darkelegance.co.uk/



Commission Closed till 2025



JoePublic ( ) posted Sat, 20 April 2013 at 7:36 PM

file_493784.jpg

 

I built a similar object and placed it in one of my scenes.

PP-2012 - IDL + 1 point light.

Despite very low IDL settings, I see no artifacts.


JoePublic ( ) posted Sat, 20 April 2013 at 7:38 PM

file_493785.jpg

 

Here are the render settings I used:


ghostship2 ( ) posted Sat, 20 April 2013 at 10:38 PM

are you getting your IDL from a light or a light emitting prop?

 

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740


ghostship2 ( ) posted Sun, 21 April 2013 at 1:04 AM

pure IDL is gonna give you some of those splochy shadows. I get them too on things like jewelry next to skin. If you use a bunch of other lights like that you'll clean up those shadows but loose the realism of the IDL.

I dont use anything but indirect lighting any more. no light in my scenes except IDL.

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740


ashley9803 ( ) posted Sun, 21 April 2013 at 1:29 AM

Pump up the Indirect Light Quality and that should fix it. Up around 50 shouldn't delay render times too much.


JoePublic ( ) posted Sun, 21 April 2013 at 2:13 AM · edited Sun, 21 April 2013 at 2:15 AM

file_493803.jpg

 

The OP stated there are four (4) spotlights in the scene.

Attached is a scene I just rendered using three (3) spotlights.

There are lots of sharp corners, and despite IDL quality zero (0), there are no artefacts.

Cranking up IDL quality is only useful if there are nothing but light emitters used in the scene. If there are "real" lights, high IDL settings are just a waste of time.

So, with four spotlights, the reason for the artefacts must be something else.


millighost ( ) posted Sun, 21 April 2013 at 6:04 AM

file_493809.png

> Quote - The OP stated there are four (4) spotlights in the scene. Attached is a scene I just rendered using three (3) spotlights. > > There are lots of sharp corners, and despite IDL quality zero (0), there are no artefacts.

The shadows on the back wall in your image look very much like what sheedee got, though. Only larger.


icprncss2 ( ) posted Sun, 21 April 2013 at 12:10 PM

Are there AO nodes attached to materials or the lights?


primorge ( ) posted Sun, 21 April 2013 at 12:17 PM · edited Sun, 21 April 2013 at 12:19 PM

Have to agree with millighost about your render, joepublic... although it's strange that the artifacts are showing in the cast shadows rather than occluded corners as you typically see with IDL artifacts? Possibly something else going on?

How much does min bias play into IDL occlusion? I mean, I've seen min bias artifacts as in mesh visibility or x-ray type artifacts (polygonal shadowing) that can be remedied by raising the min bias but...


Miss Nancy ( ) posted Sun, 21 April 2013 at 3:20 PM

last time we answered this question, OP was using IBL/AO with bad artifacts.  never said if he tried turning off AO in his IDL render.  OP may now have spotlites with AO enabled.

they might have caused less confusion if they stuck to calling it GI, instead of acronym IDL, which looks similar to acronym IBL for noobs.  but there was also confusion when GI was added to poser, as some thought it was somehow related to poser's implementation of IBL, hence it was six/one and 0.5 dozen of the other.



bagginsbill ( ) posted Mon, 22 April 2013 at 7:16 AM

These artifacts are from IC (irradiance caching) and can be eliminated by disabling IC altogether. IC makes things faster, so realize that without IC you get a slow render.

SM recently did work to make non-IC IDL more efficient.


Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)


bagginsbill ( ) posted Mon, 22 April 2013 at 7:20 AM

file_493853.jpg

The artifacts are harder to see when the area of difficulty also gets significant direct light. In such cases, the indirect light is only a fraction of the light, so the degree of artifacting is also reduced to a fraction.

As seen in Joe Public's shelf render, the shadowed area of the shelf reveleals the artifact. Note that the shelf artifact is huge due to using very broad IC samples.

Here in my render, the bottom of the prop shows the artifact very badly because this side is in shadow - the sun doesn't reach - so all of this lighting back here is indirect.


Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)


bagginsbill ( ) posted Mon, 22 April 2013 at 7:21 AM · edited Mon, 22 April 2013 at 7:25 AM

file_493854.jpg

Rendering without IC fixes it completely. Render time just over 4 minutes vs. 8 seconds with IC. Use this technique on your final render, while you sleep.

 


Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)


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