Rendering in low light- no natural light in the scene

[rosalind_gahamire]

Hi,
I was wondering if someone could help me with my render, as it is coming out with poor quality detail, and I'm aware that is because there is not might light in the scene, but is there anything I can change in the settings to improve this?

Context: Its an interior theatre set, made completely from stacked sheets of cardboard, the only light source are LED strip lights- in the scene I have used vray mesh lights
I want to improve the quality of the render so that you can see some texture details like the edge of the corrugated cardboard.

First test came out very dark so I changed the iso 100 to 300 from and shutter speed from 300 to 200 in advanced camera setting. This helped improve the brightness of the scene, but overall its still looking very blurry, and cant see any detail on the material textures.

Ive added screen shots of my settings, would appreciate any advice. thanks

[boundary]

I am having similar low light issues even with a window! driving me nuts and taking a long time to render - look forward to seeing some responses to this!

[nikoleta.garkova]

Hey guys,

Generally, best would be to stick to the default render settings and adjust them to your needs from that point; it all depends on what you wish to achieve.
In the above scenario, lowering the Shutter speed and/or increasing the ISO might help. Moreover, playing with the lights' intensity would also have an effect on the overall lighting. To get the desired details you might want to increase the render output resolution.

You might also find useful our article on Render Settings Explained - Quality vs Render Time - https://docs.chaosgroup.com/display/...s.+Render+Time
You can always forward us the projects through our contact form so we can have a look as well.

[konstantin_chaos]

Hi rosalind_gahamire,

My first impression is that your scene is quite challenging to light and then render in high quality.
The main reasons for this are the light sources as well as the geometric details.

Here are some thing that you can try:

1. Replace the mesh lights with Rectangular lights - geometry evaluation for light emission is one of the hardest things for the render engine to deal with
2. Try using Brute Force GI for your primary bounces. This will increase render times but should capture some of the scene details better.
3. Switch to the V-Ray Denoiser for production rendering. The NVIDIA AI denoiser is great for test renders and in interactive but when it comes to final frame rendering the V-Ray option is superior. In most cases especially in small images the NVIDA solution tends to blur some of the details.
4. Render a bigger image and downscale it in post. This will once again help the denoiser do a better job. It will also help V-Ray sample both textures and geometric details in the set.
5. You can also consider adding some fill lights in the set. These are most often invisible light sources, positioned away from the objects that bring some additional direct light in and help V-Ray sample.

Hope the suggestions here help,
Konstantin

[CYAN_STUDIOS]

The simplest way to get more light in, would be a light grey board behind your camera, and aim 1 or 2 plane lights at it. In your scene, I'd have them quite high, so the bounced light doesnt overlight your front seating.