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Is a corrupted file the version or the master file?

480 Views 6 Replies Latest reply: Dec 19, 2012 10:42 AM by léonie RSS
rshammaa Level 1 Level 1 (0 points)
Currently Being Moderated
Dec 12, 2012 1:36 PM

Hi,

When a version was created from a master/RAW file and it gets corrupted, what got corrupted? In other words, can we go back to the master?

 

I often create duplicate versions of important images in case one gets corrupted - and it's easier than going back to TM to retrieve an earlier file, but I am beginning to wonder whether I am kidding myself.

 

Thanks,

 

Raphael

iMac 21.5", Mac OS X (10.7.2), Pages for iPhone/iPad
  • léonie Level 8 Level 8 (46,330 points)
    Currently Being Moderated
    Dec 12, 2012 4:13 PM (in response to rshammaa)

    Raphael, that depends.

     

    When a version was created from a master/RAW file and it gets corrupted, what got corrupted? In other words, can we go back to the master?

     

    If you see a corrupted version, the chances are high, the original image is corrupted, and thus a corrupted version is computed. You should be able to see this by toggling between original master file and version (press the "M" key). The version is not stored as an actual image file, it is a set of instructions on how to create the version image file by applying adjustments to the original image. These may get corrupted too, if Aperture crashes while writing these instructions. Then you can usually repair this by repairing you Aperture library with the first aid tools. Aperture 3 User Manual: Repairing and Rebuilding Your Aperture Library

    Or just discard the version and revert to the original image by using the command "Photos > Revert to original".

     

    To protect yourself against the original images getting corrupted, it is highly recommended to backup your origininal image files right from the card, even before importing to Aperture. Aperture provides a setting to create an backup of the originals while importing. Keep these in a safe place, n addition to your Time Machine backup. But it is not necessary, IMHO, to import the images in duplicates. Then both copies will be on the same disk, and if your disk fails, has bad blocks, etc. both copies might get corrupted at the same time.

     

    Regards

    Léonie

  • léonie Level 8 Level 8 (46,330 points)
    Currently Being Moderated
    Dec 13, 2012 12:47 AM (in response to rshammaa)

    You are welcome, Raphael!

    I have also noticed that Aperture is remarkbly slow loading newly downloaded images onto the screen. It can take as lonf as 10 seconds - in other words an eternity. Is that my machines or is it Aperture 3 - I am still usong the same camera.

    How large are your raw files? Aperture will need to render previews and do some indexing,depending on what additional tags you are using (faces, places). Turn on the Activity monitor (Window > Show Activity). This will show you the tasks Aperture is performing.

    How much RAM does your iMac have? And how full is your system drive?

     

    Also your Aperture library may need repairing. If your library has a corruption, it may take longer to access your image versions. If you did not repair your library after a recent crash, try the First Aid Tools.

    Repairing and Rebuilding Your Aperture Library: Aperture 3 User Manual

     

    And just in case you installed Perian, check if you now have the accidentally the 3ivx video codec installed:

    Aperture 3: May be unresponsive or have slower performance with third-party video codec

     

    Regards

    Léonie

  • léonie Level 8 Level 8 (46,330 points)
    Currently Being Moderated
    Dec 19, 2012 10:42 AM (in response to rshammaa)

    Raphael,

    as I said - the recommended strategy is to backup the masters directly from the card, before importing them into any image processing software. This way you will always be able to revert to your original image file.

     

    If you only backup your versions, you will not be able to go back beyond the last edit.

    I always backup both - the Aperture library, which includes the versions and some of my original masters, and the original files.

     

    Regards

    Léonie

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