Ccd Minidv Digital Panasonic Pv-gs120 Camcorder Old MiniDV: 2 MP CCD. New MiniDV: 1MP CCD Why?

Old miniDV: 2 MP CCD. New miniDV: 1MP CCD Why? - ccd minidv digital panasonic pv-gs120 camcorder

I bought a video camera Canon Optura 60 MiniDV are about 2 years. The CCD has over 2 million pixels. I need a new MiniDV camcorder. So I went to the Canon website and the last one had a miniDV camcorder for more than 1 megapixel CCD. I think the new megapixel cameras would be high. Why a video camera with less megapixels?