[Leica] Re: Fugitive DVDs

[jayanand at gmail.com (Jayanand Govindaraj)]

The best Cds/DVDs are made by Taiyo Yuden in Japan by common consent:

http://www.yuden.co.jp/us/product/goods_top/goods_top13.html

The trick is to find out which brands, and which batches are sourced from
them.

Cheers
Jayanand

On Fri, Dec 12, 2008 at 6:45 AM, Lawrence Zeitlin
<lrzeitlin@optonline.net>wrote:

>
> On Dec 11, 2008, at 6:17 PM, Nathan wrote:
>
>  But which DVDs did he use? The no-name $0.75 ones from Walmart? Like
>> with everything else, you get what you pay for. I have always been
>> using good-quality, branded CDs and DVDs, mostly the "gold" ones from
>> Kodak. When we moved this summer, I decided that I had way too many
>> discs around and copied them all onto an external HD. Not a single CD
>> or DVD had problems, and they were up to 12 years old. They had all
>> been burned on PCs which have long since been recycled, but my iMac
>> had no problems with them.
>>
>
>
> Good point, Nathan. I am now in the process of transferring my CD and DVD
> image files to a hard disc. All could be read. But I've had a couple of 
> hard
> discs fail in the past so I'm keeping the old CDs in a shoe box just in
> case.
>
> Writable CDs are inherently more robust than DVDs. The spot written by the
> laser beam is larger and CDs incorporate error correcting codes. They are
> designed to have a life span of 20 to 100 years, depending on which
> manufacturers PR department wrote the specifications. My university uses 
> CDs
> for archival storage. But then they burn multiple copies.
>
> You can buy "archival" CDs if you are willing to pay big bucks. But I
> suspect that the inflated price is a marketing ploy designed to boost user
> confidence. Kodak advertised that their gold CDs had a 100 year estimated
> life. But it is not unheard of for some CDs to "rot" in a couple of years.
> DVDs, on the other hand, are optimized for cramming as much data as 
> possible
> into the disc. Video takes a lot of bits. The writing density is five times
> higher than that of a CD and little error correction is normally employed.
> Writable discs use dyes as the recording medium. Just like color film, 
> these
> dyes may deteriorate if exposed to bright light or warm temperatures. The
> moral seems to be that CDs are longer lived than DVDs and both will last
> much longer if kept in cool dark places. Don't use CDs as coffee cup
> coasters, as one of my friends did, and expect a long life without errors.
>
> As far as price goes, quality name brand DVDs (Sony, Fuji, Memorex) are
> available in stacks of 100 for less than $20 at most large US office supply
> stores. A $0.75 CD is a premium item.
>
>
> Larry Z
>
>
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