The smallest optical zoom of similar spec video cameras that have been available for around the same time as this camcorder is 10x, the biggest is 78x, and the average optical zoom is 30x. The Legria HF M56 has one of the smaller optical zooms (only 10 times zoom factor) amongst similar spec camcorders of this age.
We compared this video camera to all the other 10x (optical) camcorders and we think because of its better review score, the Canon Legria HF M52 is also worth considering.
If you are looking for a bigger optical zoom then you might want to look at the Legria HF G30 (20x and higher rated), or the 800 (£1,100) (35x and higher rated) both from Canon.
What does "optical zoom" mean?