If you are using Photoshop and want to save a file without using the .obj format, there are a few simple steps you can follow. The .obj format is primarily used for 3D models and may not be the most suitable option for your particular project. Here's how you can save your file in a different format:

1. After completing your design in Photoshop, go to the 'File' menu at the top of the screen.

2. Select 'Save As' from the dropdown menu. This will open a new window where you can choose the file format.

3. In the 'Format' dropdown menu, you can select from various options such as JPEG, PNG, TIFF, or PSD. Depending on your specific needs, you can choose the most appropriate format for your file.

4. Once you have selected the desired format, click 'Save' to finalize the process. Your file will now be saved in the chosen format, and you can continue working on it or share it with others as needed.

By following these simple steps, you can easily avoid saving your files in the .obj format and use alternative formats that are more suitable for your specific projects. It's important to consider the intended use of the file and choose a format that will best preserve the quality and versatility of your design.

Additionally, if you are working with 3D models and specifically need to export them for use in other software or applications, Photoshop provides the option to export 3D layers as various file formats such as Collada (.dae), Wavefront (.obj), and more. This allows you to maintain the integrity of your 3D models while using formats that are compatible with other platforms.

In conclusion, while Photoshop does support the .obj file format, it's important to consider whether it is the most suitable option for your specific project. By following the simple steps outlined above, you can easily save your files in alternative formats that better serve your needs. Whether you are working with 2D designs or 3D models, Photoshop offers a range of file formats to accommodate diverse creative projects.