SketchUp V-Ray Sun: A Guide to Sun Settings
A lesson series on SketchUp V-Ray Sun settings.
Once you learn the V-Ray Sun settings well, you will set things up in a stable way for both interiors and exteriors. You will also stay in control of the result. Remember, you can’t produce quality images with settings you don’t really understand. At SketchUp Türkiye, we always aim to bring you the most useful, high-quality 3D training.
YouTubeWhat’s in this video?
In this video we explain the sun settings in SketchUp V-Ray Sun. Our goal is not to make you memorize the settings but to show what they do. If you know the sun well, you set things up in a balanced way for both interiors and exteriors. The description has no detailed chapter headings. So we summarize the content here only as far as the title and description go. (The video is in Turkish; this guide walks through the key steps in English.)
The main message of the video is clear too: you need to be in control. It is hard to produce quality images if you don’t truly understand your settings. Once you know how a setting affects the scene, you work with the same confidence on every project.
Who is it for?
We made it for people who are new to rendering and can’t control sunlight. Architects preparing exterior images will also find useful information. The same goes for interior designers working on interiors with daylight. If you keep fighting renders where the shadows always look equally hard, you will get results from this lesson quickly. The video runs about 7 minutes. So you can watch it on a short break and try it in your own scene right away.
How does SketchUp V-Ray Sun work?
SketchUp V-Ray Sun is the light source that represents the sun in the scene. It usually works together with the sky environment. That way the scene gets both direct sunlight and the soft light of the sky. The sun’s position is linked to the time and date in the model’s shadow settings. So to rotate the sun, we usually change this time and date.
The height of the sun directly sets the mood of the image. In the morning and evening, for example, a low sun gives a warm tone and long shadows. At midday, the light is whiter and the shadows are shorter and harder. So choosing the time really means choosing the feeling of the image.
Location and direction
For the sun to come from the right angle, the model’s location and north direction matter too. If you assign the project’s real location and north to the model, the sun hits the building from the angle it really does. This is especially useful when you want to show a client the shadow at a specific time.
When choosing the time, we look at the purpose of the scene:
- For an exterior showcase, the warm light of the afternoon often makes the facade look more lively.
- In interiors, morning light gives a softer, calmer mood.
- For a shadow study, the best approach is to try different times one after another and compare.
If you want an overcast or hazy look, you can bring the sky light forward instead of turning the sun off completely. That softens the shadows and fills the scene with more diffuse light. In interior presentations, for example, this soft light shows the materials more clearly.
Shadows and exposure
How hard the shadows are depends on the size of the sun in the sky. So the bigger the sun, the softer the shadow edges; the smaller it is, the sharper they get. In a real sky, shadows spread out on an overcast day by the same logic.
On the other hand, a sunny exterior is a very bright scene. So you need to set the camera exposure to suit the scene. Otherwise the image comes out either blown out or too dark. In interiors, the sun comes through the window and leaves a bright patch on the floor. To balance the difference between this patch and the rest of the room, we think about exposure and extra lights together.
For the basics of shadow settings, the SketchUp Help Center is a good reference.
Related lessons
- The lesson where we explain what Dome Light is, the other route to sky light.
- Exterior facade render settings, the type of scene where the sun works hardest.
- Exterior night render, for setting up light when there is no sun.
- The menus explained in Turkish, for a general map of the settings.
For more, take a look at our render guide.
Frequently asked questions
How do I change the direction of the sun?
The sun follows the time and date in the model’s shadow settings. So you change the sun’s direction and height by changing the time or date.
Why are the shadows so hard?
Most likely the sun size is small. If you increase the size, the shadow edges soften.
Why does the render come out too bright?
In sunny scenes the light is very strong. Once you set the camera exposure to suit the scene, the image comes into balance.
