Here are 3 pictures I shot with a Fuji F30 at 6.3 megapixels.
- First Picture: No camera zoom and zoomed 18.5x on the computer (using The Gimp).
- Second one: 3x optical zoom and 6.2x on the computer.
- Third one: 3x optical zoom and 6.2x camera digital zoom.
Conclusion: In the case of the Fuji F30, using your camera’s digital zoom gives better results than what you can achieve with an image editing software zoom (results may vary with a different camera).