4k camcorder series panasonic hc vx total resolution 1891 megapixel effective resolution video 829 megapixel video 4k optical zoom 20 x intelligent zoom 40 x image processor crystal engine 4k sensor type bsi mos sensor size 12 3 lens type leica dicomar focal length 408 816 mm filter thread 49 mm image stabilisation system hybrid ois display size 3 inch display type lcd supported memory cards securedigital sd securedigital hc sdhc s