Sony DVD-R

Sony DVD-R Review



Overall 4.50 of 5 view all 2 reviews
 




reviewer
ltthao
Davis, CA

Good Media Disk

4 star rating

pc-user, a PC user, quality conscious, pc user, Every day computer user, carry lots of data around, heavy user of CDRs, dvd buff
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Pros

    Compatible

Cons
    Can only be written once

DEC
19
2007
The larger storage capacity of a DVD-R compared to a CD-R is achieved through smaller pit size and smaller track pitch of the groove spiral which guides the laser beam. Consequently, more pits can be written on the same physical sized disc. In order to write smaller pits onto the recording dye layer a red laser beam with a wavelength of 650 nm (for general use recordable DVD, versus a wavelength of 780 nm for CD-R) is used in conjunction with a higher numerical aperture lens. Because of this shorter wavelength, DVD-R and DVD+R use different dyes from CD-R to properly absorb this wavelength.



I_thumb_up Sony DVD-R is recommended by ltthao

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5 star rating
"Very good brand of blank DVD-Rs"



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