There is one feature in the average pocket camera that you should avoid the usage of: the digital zoom. Why? Here is the explanation:
Usually, a pocket point-and-shoot camera is equipped with lenses that have two zoom capabilities: optical and digital zoom. When you use the optical zoom, the optic glass component inside the lens will zoom in on the subject (like when you use a telescope), and the sensor will then capture the zoomed result to record.
On the other hand, the digital zoom isn’t really a physical zoom capability and the lens does not actually zoom on the subject. The digital zoom is merely a crop feature where the camera crops the photo and “zooms” it onto the photo frame by using interpolation. By doing so, you’ll lose details of the photograph. It’s no surprise if you use the digital zoom and the result turns out choppy or does not look sharp.
See the different between results of 5x optical zoom vs. 5x digital zoom on the above photograph and you’ll know exactly what I mean.
If even after an optical zoom is maximized on an object yet the object still seems too small in the frame, a better solution than using the digital zoom would be to physically walk toward the object. Use the digital zoom only in the most dire of circumstances and you absolutely have no other choice, because using this feature really does a lot more harm than good.
Digital zoom vs optical zoom explanation from youtube: