Panasonic believes SD/SDHC Memory Cards are ideal for video recording. The postage-size cards do not require any moving parts for recording, making the HDC-SD1 the world's smallest and lightest HD video camera to date. The SD/SDHC Memory Cards also promise a 1.7 second quick start-up, and skip-free, reliable recording. The HDC-SD1, measuring 74 x 69 x 142 mm (430 g weight excl. battery), records up to 90 minutes of HD images on a 4 GB SDHC Memory Card in HE mode (approx. 6 Mbps).
The HDC-DX1 model uses 8-cm DVD discs, providing multi-format compatibility supporting DVD-RAM/-R/-RW and DVD-R double-layer (DL) discs. The HDC-DX1, measuring 92 x 91 x 163 mm (680 g weight excl. battery), records up to 60 minutes of HD images on an 8-cm DVD-R DL disc in HE mode.
Both models support the AVCHD format, an HD digital video camera recording format Panasonic developed with Sony to let consumers enjoy high-resolution home videos easily in the living rooms. This new format enables recording and playback of high-resolution digital images and 5.1-channel surround sound.
The HDC-SD1 and HDC-DX1 feature a newly-developed 3CCD imaging system designed particularly for HD shooting. The new system provides a higher color resolution which is more than double the resolution of conventional image sensors. Their high-sensitivity features also allow for shooting in poorly-lit situations - for example, as low as six lux.
To achieve high-quality HD recording, Panasonic has also developed a new high-speed HD signal processor, the HD Crystal Engine, that processes images twice as quickly as progressive scan CCDs. Panasonic has also developed a new LSI to implement the MPEG4 AVC/H.264 technology used in the AVCHD format. The two models are equipped with a new compact, wide-angle Leica Dicomar Lens. From image processing and compression to recording, the two compact cameras are packed with Panasonic's "black-box" technologies to set a new standard in HD video recording.
In addition to splendid images, the HDC-SD1 and HDC-DX1 feature 5.1-channel surround sound with five microphones. The microphone system has a zoom function. As the camera zooms in the subject, the microphones simultaneously zoom in and pick up the sound around the subject in the distance.
Being Panasonic products, both models include the proprietary Optical Image Stabilizer (O.I.S.) that compensates for unintended hand-shakes when shooting. The larger the TV screen becomes, the more the resolution and clarity become important. The O.I.S. corrects blurring caused by hand-shake without compromising the image quality.