If you're working with 3D modeling and rendering, Cinema 4D (C4D) is a popular choice for its powerful tools and user-friendly interface. When it comes to sharing your 3D creations with others or using them in different software, exporting as an OBJ file can be a convenient option. Here's a simple guide on how to export OBJ from C4D.

1. Open your 3D model in Cinema 4D and make sure it's finalized and ready for export. Ensure that all textures and materials are properly applied to your model.

2. Once your model is ready, navigate to the 'File' menu at the top of the C4D interface and select 'Export'.

3. In the Export window, choose 'Wavefront OBJ (*.obj)' as the file format. This will ensure that your 3D model is saved as an OBJ file.

4. Click on 'Options' to customize the OBJ export settings. Here, you can specify options such as including materials and textures, triangulating polygons, and adjusting the scale of the model.

5. After configuring the export settings, choose a destination folder for the OBJ file and give it a name. Then, click 'Save' to export your model as an OBJ.

6. Your 3D model is now exported as an OBJ file from Cinema 4D and can be used in other 3D software or shared with others for viewing or further editing.

Keep in mind that while OBJ files support geometry and material information, they may not fully retain advanced features such as rigging or animation. If your model includes these elements, consider alternative file formats for exporting.

Exporting OBJ files from Cinema 4D is a straightforward process that allows you to easily share your 3D creations and collaborate with others across different platforms and software. Whether you're a 3D artist, designer, or hobbyist, mastering the export capabilities of C4D can enhance your workflow and open up new possibilities for your 3D projects.