How to Fix Grey Dots on Blender Render

When using Blender for 3D modeling and rendering, many users encounter a common issue—annoying grey dots in the render output. These dots not only affect the rendering quality but also make the final piece look unprofessional. Today, we'll delve into how to solve the problem of grey dots in Blender rendering.

　　Understanding the Cause of Grey Dots

　　First, we need to understand why grey dots appear. These dots are typically caused by noise in the rendering process and may stem from several factors:

　　- Insufficient Sampling: Blender samples the scene during rendering. The more samples, the better the render quality. If the sampling is insufficient, noise and grey dots will appear in the image.

　　- Ray Tracing: Ray tracing is one of Blender's core rendering technologies, but it is prone to noise, especially when handling complex light reflections and refractions.

　　- Material and Texture Settings: Improper material and texture settings can also cause grey dots, particularly when using low-quality textures.

　　Solutions

　　With an understanding of the cause, we can take appropriate measures to solve this issue.

　　Increase Sampling Count

　　Increasing the sampling count is the most direct and effective method. Open Blender’s render settings and increase the sampling value under the "Sampling" option. Generally, the higher the value, the better the render quality, but rendering time will also increase accordingly. You can gradually increase the sampling count until the grey dots disappear or you achieve an acceptable result.

　　Adjust Ray Tracing Settings

　　Optimizing ray tracing settings can effectively reduce noise. In Blender’s render settings, find the "Ray Tracing" option and adjust the "Max Bounces" and "Min Bounces." Reducing the max bounces appropriately can decrease noise but may affect the complexity of light interactions, so it’s important to find a balance.

　　Use High-Quality Textures and Materials

　　Low-quality textures and materials often lead to grey dots. Therefore, using high-quality textures and materials is key to solving the problem. If you need many high-quality 3D textures, HDRI, or 3D model downloads for your models and virtual scenes, you can download them from Relebook and directly import the textures and 3D models into your Blender project.

　　Enable Denoising Feature

　　Blender has a powerful denoising feature that can automatically reduce noise during post-processing. In the render settings, find the "Denoising" option and enable it. You can choose from different denoising algorithms and adjust them based on the actual effect.

　　By using these methods, we can effectively solve the grey dot problem in Blender rendering, thereby enhancing the render quality and the overall quality of the work. Remember, solving the grey dot issue is not just about technical adjustments but also about continuously optimizing and improving during the creative process. We hope this article helps you and makes your work with Blender’s 3D modeling and rendering more seamless. If you need high-quality 3D textures, HDRI, or 3D model downloads for creating models and virtual scenes, you can download them from Relebook and directly import the textures and 3D models into your Blender project.