COUCH

grabcad

In 3D modeling, OBJ, STL, 3DS, and C4D are file formats that can be used to store and share digital models. OBJ is a versatile format that supports various objects such as meshes, cameras, and lights. STL is commonly used for 3D printing as it describes the surface of an object as a triangle mesh. 3DS is popular in game development and animation due to its ability to store animations and materials. C4D, or Cinema 4D format, is known for its powerful tools for creating complex models in a user-friendly environment.