The final stages of 3D visual creation are 3D rendering and compositing. While both are essential to producing polished visuals, they serve very different purposes in the pipeline.
3D rendering is the process of generating an image or sequence of images from a 3D scene. It takes the virtual models, lighting, materials, and camera perspectives created in 3D software and calculates what each frame should look like frame by frame. This process turns data into photorealistic or stylized images. Think of it as taking a digital photograph of a virtual world. Rendering can be computationally intensive, as it simulates complex lighting, shadows, reflections, and textures to achieve realism.
Compositing is the stage that comes after rendering (or filming, in live-action workflows). It involves combining multiple image elements into a single cohesive image. These elements could include several rendered 3D passes (the main subject, shadows, reflections or backgrounds) along with visual effects and color grading.
We render 3D animations frame by frame as a sequence of still images. This ensures that if there is a problem during a long render for a product marketing video, we can fix just a few frames vs starting all over. They are combined in After Effects or other compositing software and exported as video for the editor.
Having shadow, reflection, and background layers as separate passes gives us flexibility to change characteristics of the images quickly without rendering everything all over again. Need to tweak a reflection or brighten a background? We simply adjust the necessary layer – no need to rerender. Here’s an example of how several rendered layers are combined to make a final image:
Another common example is screen replacements on a digital device. When rendered separately, updates—such as new content or improved brightness—can be applied in seconds.
In simple terms: rendering creates the raw image, and compositing finesses it into the final shot.
This flexible workflow is especially valuable for clients with product lines or configuration options. Instead of producing dozens of separate renders, we can deliver layered files with interchangeable accessories, backgrounds, and finishes—streamlining digital asset management.
That’s why our first question is always: “How will this asset be used?” Is this intended as a huge image in a trade show booth? A set of images for your website or print? Or a 3D animation for a marketing video? Understanding your needs helps us craft the most versatile and cost-effective solution—now and for future projects.
