Fireflies??
poorman_65
Posts: 140
I am getting a ton of tranparent spots on one part of my renders, primarily on the character. It initially looks like it is going to render fine and then spots start to appear all over her leg and toes. The attached picture is fairly early in the render but it keeps getting worse throughout the render. I have the Firefly filter on and I have tried adjusting the lighting including putting Probe lights right in front of the area.
I am baffled! Can anyone tell me what is going wrong.
Daz 3D is part of 
Connect
DAZ Productions, Inc.
7533 S Center View Ct #4664
West Jordan, UT 84084
Licensing Agreement | Terms of Service | Privacy Policy | EULA
© 2025 Daz Productions Inc. All Rights Reserved.
Comments
Hi friend, from my experience fireflies develop from inadequate render time, over reflective surfaces or insufficient lighting. Larger entire scene or larger closer image would be helpful, cannot determine if image is fireflies or grainy.
I'm rendering to 99.9 and changing the lighting doesn't seem to make a difference. Here is the full 1920x1080 after waiting the full render time.
Do you have any lights close to these points, or perhaps spotlights that aim at that particular area?
I just verrified that there are no lights that are close. I have two spotlights in the room now and the same thing occurs with either light.
I just discovered something very odd that maybe someone can understand. I noticed that her right foot was right behind her left knee where the problem is the worst.
If I hide the toes on both feet, the problem goes away.Perhaps I need to check for some value in her toenails?
Increase the iterations or render smaller, or render larger with less resolution and scale down with photo editing softwares. I have only been using Daz for about a year now and know from my brief experience that longer render times for higher quality images is the norm.
Is the figure scaled?
Yes! There is scaling.
Body Scale: 95.5%. Looks like everything from the Hip is at 100%
steviem672 - I render to 99.9%. So, it renders for quite awhile. The render gets worse over time and not better.
If the figure is greatly scaled down then you will need to adjust the SSS transmitted distance (for the skin surfaces in the Surfaces pane), for one, to stop light from travelling too far through the body and coming out where it shouldn't - minor scaling shouldn't be an issue.
The SSS amount for both skin & nails is at .69. The skin's sss mode is Mono. I edited the earlier post and mentioned that the scale is 95.5%.
Toenails are Chromatic
Switched the toenails to Mono and so far it seems to be working.
It renders fine with the Toenails SSS Mode at Mono
Chromatic SSS is giving odd behaviour in some situations, so it may that you are seeing an slightly unusual version of that. If so, I believe it will be fixed in a later version of Iray, which should presuambly be in the next update to DS. Switching to Mono is one fix, turning on Draw Dome in Render Settings is another (and probably wouldn't affect your render in any other way here).
I clicked on this thread out of curiosity and I have a quick question. What is the Firefly filter that was mentioned and where might i find that?
In Render Settings.
It could be render settings... When I used the normal render settings I normally see fireflies, I am no expert by any means, but I did buy a lot of assets and presets to make things work well with minimal effort. I rendered this image at UHD 4K, I did a black night type of image to see if I got fireflies, using only a single GTX 1070, i7 8700K and 32 gb ram it rendered for 30 min. I did not see any fireflies. Yes, I'm amateurish but I tried lol.
The firefly filter is in the render editor, located in the filter section.