What is the advantage of RAW files.

Discussion in 'Australia Photography' started by Pepe Duran, Jun 28, 2004.

  1. Pepe Duran

    Pepe Duran Guest

    I have a Nikon coolpix 5400 and it now has a firmware update to enable it to
    take RAW files.
    Can anybody explain what is the advantage of this.

    Thanks.
     
    Pepe Duran, Jun 28, 2004
    #1
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  2. Pepe Duran

    Ken Chandler Guest

    "Pepe Duran":
    Some advantages of RAW:

    * Data hasn't already been subjected to JPG compression

    Saving to JPG after any editing a RAW will be the first dose of JPG
    compression the image receives, no unnecessary 'throwing out' of data. As
    you probably already know JPG is a lossy format, so if you open a JPG edit
    it and resave it as a JPG you throw away image data with each save.

    * You choose level of compression for the image.

    The image might be better with less sharpening, or more sharpening.
    Sharpening can be added or removed to taste before the image has had any
    sharpening applied by the camera. You might like to open the image without
    sharpening and upsample/downsample the image and apply sharpening to the
    final size to retain maximum image quality. It may be that you just prefer
    to use the more advanced sharpening techniques such as selective sharpening
    in a program like Photoshop over the batch sharpening applied in camera.

    * Near-lossless correction of white balance

    Bring the whites back to white instead of having a blue tinge if the auto-WB
    gets it wrong. Again this is without the loss incurred in a JPG WB
    correction.

    * Greater color depth - generally 12bit vs. 8bit

    Disadvantages

    * Need additional software to process the RAW images.

    This could be free software that comes with the camera/upgrade, shareware
    like breezebrowser or commercial software like Adobe's Photoshop CS.

    * Generally larger file sizes
    * Depending on the camera potentially significantly longer write times

    I am sure there is more I've missed but others will no doubt add those.
     
    Ken Chandler, Jun 28, 2004
    #2
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  3. Pepe Duran

    Mark Guest

    you dont have to cook them.
     
    Mark, Jun 29, 2004
    #3
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