ACM SIGGRAPH 86 computer graphics conference proceedings on a variety of topics, including applications of incremental rendering, natural phenomena, fast rendering techniques, lighting models, geometric modeling, imaging techniques, user interfaces, ray tracing, anti-aliasing, scientific animation, window systems, application and system trends in the Japanese printing industry, interactive digital image processing, program visualization, hardware versus software, color issues in the user interface design, integrating computing into the artistic creative process, computer animation, knowledge-based computer graphics (intersection of AI and computer graphics), and array processors.