Panasonic today unveiled a pair of camcorders in Japan that each claim their own world's firsts. The TM350 is the first HD camcorder to hold 64GB of flash memory and can use the storage to record about 16 hours of 1080p, AVCHD (H.264) video at a film-level 24 frames per second, with an SDHC card slot holding more. It can also add 5.1-channel surround audio to the mix and uses a 3MOS (3 CMOS) sen