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Old 11-10-2007, 02:06 PM   #4
Blue Blue is offline
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Yeslek's answer is close enough. The technical answer is the NA (Numerical Aperture) or how the lens focuses the laser beam on the disc. Before anyone starts, no amount of firmware updates can change the lens's NA. It can't be done, so once a Blu-ray player always a Blu-ray player, once a HD-DVD player always a just "good enough" optical media player.
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