Photoshop is a powerful tool not only for 2D editing but also for 3D design. If you're working with OBJ files and want to make adjustments or enhancements, Photoshop provides a range of tools and features to help you achieve your desired results. Here's a step-by-step guide on how to edit OBJ in Photoshop.

1. Open Photoshop: Launch Adobe Photoshop on your computer and make sure you're running a version that supports 3D editing, such as Photoshop CC.

2. Import OBJ file: Go to File > Open and select the OBJ file you want to edit. Photoshop will automatically recognize the file as a 3D object and open it in a 3D workspace.

3. Navigate 3D workspace: Once the OBJ file is open, you'll have access to various 3D editing tools and panels. Familiarize yourself with the 3D workspace, including the 3D layers, properties, and tools.

4. Make adjustments: Use the 3D tools and properties to make the desired adjustments to your OBJ file. You can rotate, scale, move, and manipulate the 3D object to modify its appearance.

5. Apply textures and materials: Photoshop allows you to apply textures and materials to your 3D objects. Use the materials panel to select and apply different textures to different parts of the OBJ file, enhancing its visual appeal.

6. Add lighting and effects: Experiment with different lighting options and effects to give your 3D object the desired look and feel. Photoshop provides various lighting presets and effects that can be applied to enhance the overall presentation of the OBJ file.

7. Save your changes: Once you're satisfied with the edits, go to File > Save As and choose the desired file format for your edited OBJ file. Photoshop supports various 3D file formats, allowing you to export your edited OBJ for further use in other 3D applications or projects.

By following these steps, you can effectively edit OBJ files in Photoshop to customize and enhance your 3D designs and artworks. Whether you're a graphic designer, 3D artist, or hobbyist, mastering the art of editing OBJ in Photoshop can open up new creative possibilities for your projects.