Well, "Full HD" used to mean only 1920x1080p, especially in the context of HDTV. Then several manufacturers started applying "Full HD" to camcorders that record at lower resolutions and interpolate to a higher output resolution; for example your GZ-HD7U has 3 chips, each of 976x548, and uses "4X software interpolation" (JVC's description) to output the higher resolution. Then other camcorder manufacturers applied the term "Full HD" to actual 1920x1080i chips, etc. So, the label "Full HD" is pretty meaningless now on a camcorder. Manufacturers should obviously always state x and y resolutions of the CHIP (especially if there's a higher interpolated/recorded resolution) and whether progressive or interpolated...
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Well, "Full HD" used to mean only 1920x1080p, especially in the context of HDTV. Then several manufacturers started applying "Full HD" to camcorders that record at lower resolutions and interpolate to a higher output resolution; for example your GZ-HD7U has 3 chips, each of 976x548, and uses "4X software interpolation" (JVC's description) to output the higher resolution. Then other camcorder manufacturers applied the term "Full HD" to actual 1920x1080i chips, etc. So, the label "Full HD" is pretty meaningless now on a camcorder. Manufacturers should obviously always state x and y resolutions of the CHIP (especially if there's a higher interpolated/recorded resolution) and whether progressive or interpolated...