The latest build of Blender 3D includes a denoise routine that can clean up noisy renders. It’s great for those who don’t want to go crazy with the settings, and get really nice looking images without spending hours tweaking!
Another technique you can use to denoise your rendered images in post-production is with a simple stacking of noisy photographs. This method has been used by photographers for years, and there are numerous applications available that will allow users like photoshop or Gimp – an open source image editing software package-, combine similar frames into one clear shot without any speckled noise effects present on it at all!
Dimitris Katsafouros walks through the technique, which really just involves strategically setting a layer’s opacity. That is what you need to do for this one – simple!
A lot of people don’t know this but it is possible to generate an infinite number of frames without really doing anything. This can be useful for things like animations because you are not stuck with one version if something goes wrong in the rendering process, which could happen when working on individual images or videos.
But keep in mind that generating many renders takes longer than just cleaning up after yourself by fixing up errors your program might have found along its way through each frame with graphics editing software such as Adobe Photoshop .
Even though Dimitris’ example produces some nice results, and it’s done in half the time than just increasing sample counts. Neat!