The excellent average rating is 4.7 out of 5 from 3 reviews.
Secure Digital (SD), Secure Digital HC (SDHC), Secure Digital XC (SDXC)
Optical sensor size
The number of times the image can be enlarged with the optics of the camcorder. The optical zoom 'moves' you closer to the subject without sacrificing quality. The higher the optical zoom, the farther away you can be to take a clear, close-up image.