Earlier, in the camera buyer's guide, I talked about aperture priority and how this can control depth of field. If you bought a camera with this function, you can play with the depth of field. Say you'd like a narrow depth of field, one that has a foreground in focus with a background that's out of focus. What you can do is choose aperture priority, and then choose a lower F stop number. Your camera will figure out the rest of the exposure. Be aware that a shot with a selective focus image might actually take away from your artwork.
A wider depth of field will allow you keep foreground, middle ground and background in clear focus. This might be an advantage if you have a very large piece. To get a wider depth of field, use your aperture priority mode and choose a larger-numbered F stop. The camera will figure out the rest of the exposure. Another way to do this is to choose your camera's landscape shooting mode. Even if you're shooting a 3D object, landscape mode can actually help you gain more depth of field.