The smallest optical zoom of video cameras of a comparable age and type to this camcorder is 10x and the biggest is 78x. With an optical zoom of only 10 times zoom factor, the Canon HF-M46 has one of the smaller optical zooms amongst small total megapixels video cameras of this age.
We compared all the other 10x (optical) camcorders to this video camera and we think because of its better review score, the Canon Vixia HF M40 is also worth considering.
If this video camera optical zoom is not big enough for you then you might want to consider the Sony HVR-Z7 (12x and higher rated), or the Panasonic HDC-TM900 (12x and higher rated).
What does "optical zoom" mean?