How to avoid speckling for interior rendering

#1

Hi fellow renderers,

Still a newbie in using Keyshot rendering interior scene, I would like to get some best practice tips on doing interior lighting settings. The current setup still results in having speckling on the render which is very frustrating…

Here are some basic info:
Keyshot studio 2025/
Environment: 8k HDRI downloaded from Polyheaven
Lighting: Ray bounces 30/Gl bounces 30/Smooth GI is checked
Image: Exposure 2EV / Denoise blend 0.7 / Firefly Filter 0.05 / Sharpen Intensity 0.5; radius 1px / Bloom Intensity 1; Radius 2px; threshold 0.5
Render Samples: 1024

Hardware: MAC M1 Max/64MB

render
render.jpg3840×2400 1.12 MB

Any tips would be appreciated!!

#2

Hey Eric,

I guess you don’t have caustics enabled since that will cause a lot of fireflies in interior scenes I think. Also a bit hard to see what the issue is with your image.

I did some testing with interior in KS and what worked for me was to push a lot of light through the Windows using area lights. That will make it easier for KS to render without much noise. Even if it’s a bit bright with the render that’s easy to correct in post. Easier than the other way around.

I see you’re using a MAC, if you want you may share the KSP and I can test a few things using my GPUs and let you know what might work best with your scene. You can just share it using wetransfer.com for example and send me the link with a private message. I can imagine it takes quite long to render if you’ve 1024 samples on the M1

3 Likes
#3

Thank you so much! Oscar!

I just messaged you my KSP file.
And Yes, I disabled the caustics due to the mass fireflies from the test renderings. I also increased the lighting a lot from the HDRI. Shall I add more filler light in the ceiling?