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  1. #1
    Join Date
    Mar 2005
    Posts
    4

    CD photo quality

    I am going to be travelling and would like to know if I will lose any photo quality by transferring my photo's to CD en route to free up my sd cards for more photo's.I will be taking some tiffs and some jpegs.Probably a silly question but it's all new to me.

  2. #2
    Join Date
    Sep 2004
    Location
    western pa
    Posts
    2,334
    I have not noticed any loss by writing to a CD or DVD.
    One other suggestion that may or may not work for you is a digital wallet, such as.


    http://www.memorylabs.net/xsdriivpdrin.html


    You can get one with a 40 gb hard drive for less than 150 bucks.
    One other thing ..consider passing on the TIFFs. Not much if any advantage.




    .
    .






    Gene
    http://grc225.zenfolio.com/
    http://imageevent.com/grc6
    one of these days I'll understand!

    Panasonic FZ20 & FZ30,FZ18
    D50 -- D80

  3. #3
    Join Date
    May 2005
    Location
    Japan
    Posts
    213
    Hei... its digital world..
    whatever the media.. as long the file is the same. it has the same quality!

    Dont worry!..
    i transferred my pic (mostly scraps).. to the DVD .. without worryness!

  4. #4
    Join Date
    Jul 2005
    Posts
    52
    Hey the only silly question or dumb one is the one you don't ask. I wish I had known about this forum a year and a half ago when I took my family to California. I lost a whole memory card of pictures of the Grand Canyon and other sights on the trip. When I got home I had four memory cards filled and then burned them to a cd and am still able to enjoy them. No loss of quality by doing this either.

  5. #5
    Join Date
    Jul 2005
    Location
    Sydney, Australia
    Posts
    4,428
    You can download as you want and make duplicates all you need without losing quality AS LONG AS you DON'T reduce the size of the pictures with computer programs. The only worry, though not often, is CDs that you use to keep the photos can fail. I suggest you make 2 CD copies of whatever are important pictures.

  6. #6
    Join Date
    May 2005
    Location
    Japan
    Posts
    213
    agreed with tim11.. always 2 copies.. never 1 copy.. for important pic!
    Lumix FZ-20K
    Lumix FZ-30
    Canon Kiss Digital N
    EOS 40D
    + EF-S 18-55 f3.5-5.6 USM +EF16-35mm f2.8+ EF 28-70mm f2.8+ 70-200mm f2.8+ EF 28-135mm f3.5-5.6 IS + Tamron 100-300 f5-6.3
    check my gallery (^-^)

  7. #7
    Join Date
    Mar 2005
    Location
    Sacramento, CA
    Posts
    378
    Might I also suggest that you check your photo CD's at somewhat regular intervals (e.g. once a year). CDR's are not infinite. While some are better than others they will all fail at some point. That is why 2 copies are good, and a periodic check is good. Good quality CD's are also good to have, and backing up on a website can also be good.

    Erik

  8. #8
    Join Date
    Jan 2005
    Posts
    69
    Quote Originally Posted by kuroneko
    Hei... its digital world..
    whatever the media.. as long the file is the same. it has the same quality!

    Dont worry!..
    i transferred my pic (mostly scraps).. to the DVD .. without worryness!
    every time you put a file such as a photo through the CPU and copy/save/open it, there will be data loss.

    yes i am aware it's a realisticly small and the chances of corupting a file due to opening it is slim. however the chance is there.

    your CPU has fan noise, heat deflection, and other losses through processing. this is why you will find that most professional graphic designer, as any electronic music producer will only allow quality heat syncs, fans and PCI cards for their editing needs.

  9. #9
    Join Date
    Mar 2005
    Location
    Chapel Hill, NC
    Posts
    647
    Electronic music professionals only use quality stuff because music is inherently an analog signal .. same goes for graphic designers working on huge CRTs ... the video signal is analog at the final stage.
    Electrical interference can and will degradge analog signal quality. Bit errors in digital files, on the other hand, are for one much much more difficult (since there's essentially just a high voltage and a low voltage, and the difference between them is too much to be messed up by noise most of the time), and for another are guarded against using checksums and other error-correction methods.
    Simply copying a file and saving it somewhere else will NOT cause any degradation, as long as the media is ok.

  10. #10
    Join Date
    Jan 2005
    Posts
    69
    in practice you're basically right.

    in theory there is potential to loose data while moving through the CPU and any cables that are close to the PSU or fan due to an inducted current if cables are not shielded is there.

    but as i posted initially, this is not something to worry the average computer user.

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