Blu-ray means more memory
by Gadget Geezer
Hitachi is better known for gadgets other than camcorders. But the company is one of the big names behind the new data storage technology, the Blu-ray Disc.
So it's no surprise that Hitachi has released the DZ-BD70 and the DZ-BD7H camcorders, bringing the Blu-ray Disc technology to camcorders for the first time.
Both models come equipped with a Blu-ray Disc drive capable of supporting the new high-capacity discs, while the BD7H boasts an extra 30GB hard disk drive.
So what's the big deal?
With a Blu-ray Disc, you get nearly 10 times the capacity of a DVD on a disc of the same physical size.
By replacing the 'red' lasers used in conventional DVD and CD players, Blu-ray uses a laser in the 'blue' light spectrum, which has a shorter wavelength, allowing a larger capacity on a single disc surface.
The result is a disc that can hold 25GB of data on a single layer disc and 50GB on a dual layer disc.
The extra memory capabilities should come in handy for High Definition-enabled devices like the two Hitachi camcorders. Both support Full HD (1920 x 1080 pixel) video using the MPEG-4 AVC/H.264 compression.
The BD70 and BD7H are equipped with a 5.3 megapixel CMOS sensor, giving you about 2.07 megapixels for video and 4.32 megapixels for stills.
The two models are expected to launch by October, with prices starting at around HK$11,000.
Pros: Blu-ray Disc technology, Full HD video, hard disc on DZ-BD7H
Cons: Need to transfer data off Blu-ray and onto other formats if you don't have a Blu-ray player
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