When photographing people or objects, it is important to have a clear focus on your subject. However, sometimes you may need to add depth of field to your shots in order to create a more realistic image. To do this, you will need to use the tools available in Photoshop. The first tool you will want to use is the Lens Blur tool. This tool can be used to blur out parts of your image, making it look more realistic. Next, you will want to use the Gradient tool. This tool can be used to create different colors in your image, making it look more realistic. Finally, you will want to use the Contour tool. This tool can be used to create a smooth outline around your subject. These are just a few of the tools available in Photoshop when it comes time for adding depth of field. Be sure to experiment and find what works best for you when photographing people or objects!