C4D与Solid Angle Arnold渲染器的接口插件名为C4DtoA。
Arnold渲染器是一款高级的、跨平台的渲染 API。是基于物理算法的电影级别渲染引擎，目前由Solid Angle SL 开发。正在被越来越多的好莱坞电影公司以及工作室作为首席渲染器使用。
Arnold is an advanced Monte Carlo ray tracing renderer built for the demands of feature-length animation and visual effects. Originally co-developed with Sony Pictures Imageworks and now their main renderer, Arnold is used at over 300 studios worldwide including ILM, Framestore, MPC, The Mill and Digic Pictures. Arnold was the primary renderer on dozens of films from Monster House and Cloudy with a Chance of Meatballs to Pacific Rim and Gravity. It is available as a standalone renderer on Linux, Windows and Mac OS X, and is accessible through plug-ins for Maya, Softimage, Houdini and Katana.
安装说明：
Win:
安装对应的版本
打开Fix文件夹，拷贝替换ai.dll到安装目录中
同时拷贝solidangle.lic到相同文件夹中
Mac：
安装插件
打开Crack文件夹，拷贝libai.dylib和solidangle.lic文件到/Applications/MAXON/CINEMA\ 4D\ R16/plugins/C4DtoA/arnold/bin
请先 ！