Another Plea for Help with Render Lighting

wompdonkey

Hello. I have been struggling with indoor scenes for as long as I've been trying to render them. I've read about lighting (3-point, emissive, HDR, etc.) and have had very little success getting my images to render without a ton of graininess in them. I've included two renders. One is a simple render that I did using two primitives.

One as a backdrop and one as a reflective surface. I used a point light only. It is a little grainy but that's because I stopped it after only about 60 seconds as it was only going to be used as a picture in my second render.

The second is a full scene with 3 models and some furniture. I've included a screenshot of the emissive lighting I used. In this scene, I've tried to use emissive panes outside of the windows, an emissive sphere overhead of the characters (centered in the room), 3 spotlights (which didn't work very well at all), HDR, a torus on the ceiling fan and another centered above the characters and several combinations of these. No matter how high or how low I  set the lighting, I still get this grainy looking image from iray. 

I'll be honest, I'm pretty green. I'm not sure if I have all iray materials and I'm a complete novice to scene setup and lighting. 

I'm creating a visual novel so quantity is more important to me than quality but I still want my renders to look good.

My computer is a couple of years old but here are the specs; i7-10875H CPU @ 2.30GHz   2.30 GHz, 32GB of RAM, GeForce RTX 2070.

 

I can't get the other two screenshots to upload so here are the links:

Not so noisy render:

https://drive.google.com/file/d/1Va_Hkc4RQ5eFhgzlFtE1GDj358az23cJ/view?usp=sharing

 

Noisy Render:

https://drive.google.com/file/d/1UhuN2njEXe2ZlR8j-t_Oq5lJ7RcOzWVP/view?usp=sharing

PerttiA

Maybe try with these settings and lights

https://www.daz3d.com/forums/discussion/comment/7753691/#Comment_7753691

 

wompdonkey

I will give these a try. I really do appreciate the link but this doesn't tell me why this is happening. I know all scenes are dynamic and I'd really like to understand what I'm doing that could be done better. :)

SofaCitizen

Have a try and rendering the scene with the settings that PerttiA recommended and see what difference that makes. As the image you posted is grainy/noisy it is likely that the Render is not finished but has stopped early due to hitting the max samples/time/ratio - or maybe you stopped it manually? If you want to cut down the render time a little while still reducing the noise you can try playing with the denoiser under Filtering in the Render settings. You can set that to kick in a while into the render so it doesn't overly smooth things out too much. That might be a good idea for a Visual Novel where you'll need to crank out lots and lots of images.