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Q: Wrong image preview while I am moving adjustment sliders in Aperture

When I move adjustment sliders, a different recently and previosly adjusted image will frequently show in the viewer while the slider is being moved.  Sometimes parts of two or more previous images will appear and sometimes in the wrong orientation. This makes it makes it impossible to see the result of the adjustment until I release the slider which is annoying.  I cannot reliably replicate the problem but it happens often.  It seems random as if the wrong image is in a cache and not refreshing properly.

 

Details:

MacPro (New) 6-core 32GB RAM, D300 Graphics OS X

 

Aperture 3.5.1

Moved Library from old machine (2007 MacPro) and rebuilt library

250K images all referenced

Library is big (236GB)

Files are RAW Canon 5dMk3 and tend to be about 30MB

 

Preferences:

Import: standard previews

Previews: generate automatically and share when quitting (half size medium quality)

 

library created new previews for all images when I rebuilt it

 

machine will run processor and memory hard, sometimes around 90%

 

Might it be a poor choice of preference settings or a corrupt library?  Anyone else ever experience this condition?  I would appreciate any suggestions.

Mac Pro, OS X Mavericks (10.9.2)

Posted on Mar 18, 2014 9:48 AM

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Q: Wrong image preview while I am moving adjustment sliders in Aperture

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  • by léonie,

    léonie léonie Mar 18, 2014 10:19 AM in response to probable
    Level 10 (106,929 points)
    iLife
    Mar 18, 2014 10:19 AM in response to probable

    Sometimes the thumbnails in the browser are bound to the wrong original image files. Then you will see a completely different image, when you start to adjust the image.

    I'd try first to create new thumbnails for the project in question:

    • Select the images in the Browser, and from the "Photos" menu select "Generate Thumbnails".

     

    If that does not help, repair your Aperture library:

          Aperture 3 User Manual: Repairing and Rebuilding Your Aperture Library

     

    -- Léonie

  • by probable,

    probable probable Mar 18, 2014 4:31 PM in response to léonie
    Level 1 (0 points)
    Mar 18, 2014 4:31 PM in response to léonie

    Thanks for the suggestion... but generating new previews and forcing new previews does not solve the problem.    Also to be clear, the correct image appears until I grab the slider and the wrong image appears for the duration that I hold onto the slider and then reverts back to the correct image with the new adjustment.  Stranger still, the incorrect preview demonstrates the adjustment I am making yet that image (correctly) remains unchanged when I go back to view it. 

     

    I have rebuilt the library once since this problem began with no success.  I have also done a repair and permissions repair with no improvement.

     

    Another feature of the situation is that the only "wrong" images that appear are ones that I have just adjusted and not other images in the project.

  • by Ernie Stamper,

    Ernie Stamper Ernie Stamper Mar 20, 2014 6:37 AM in response to probable
    Level 8 (37,588 points)
    Video
    Mar 20, 2014 6:37 AM in response to probable

    Where are the Referenced images?  What drive?  How connected?

     

    Ernie

  • by probable,

    probable probable Mar 20, 2014 7:37 AM in response to Ernie Stamper
    Level 1 (0 points)
    Mar 20, 2014 7:37 AM in response to Ernie Stamper

    The referenced files are on an eternal Promise Pegasus2 R4 8TB RAID connected via thunderbolt 2

    The library is on the boot 1TB internal PCIe flash drive (I thought this would be faster than the external)

  • by léonie,

    léonie léonie Mar 20, 2014 7:42 AM in response to probable
    Level 10 (106,929 points)
    iLife
    Mar 20, 2014 7:42 AM in response to probable

    Thanks for the suggestion... but generating new previews and forcing new previews does not solve the problem.

    Just to be clear - I said "Thumbnails" and not "Previews". Both are used very differently. The thumbs are what you are seeing in the browser and which might be referencing the wrong image versions.

  • by probable,

    probable probable Mar 21, 2014 9:49 AM in response to léonie
    Level 1 (0 points)
    Mar 21, 2014 9:49 AM in response to léonie

    Sorry, I misunderstood about that but I have now tried regenerating the thumbnails also and have discovered more...  When I edit in a split viewer is when the problem occurs, when I use the viewer only the problem dissappears.  When I return to the split viewer sometimes the problem goes away but sometimes not.  That is also the case for generating thubnails, it soemtimes relieves the problem temporarily but it still returns. 

     

    It really seems that somehow Aperture is referring to a cached image from a image when I attempt an edit. Another guess is that it may have something to do with Mavericks memory manager trying to guess which images to hold in memory and which to release.  I can still get work done but this is disruptive to my workflow when I have to keep switching views in order to make a quick edit. 

     

    Thanks for te help so far and let me know if you have any othe ideas.

  • by Ernie Stamper,

    Ernie Stamper Ernie Stamper Mar 23, 2014 7:06 AM in response to probable
    Level 8 (37,588 points)
    Video
    Mar 23, 2014 7:06 AM in response to probable

    I keep my library on a 4 TB Thunderbolt drive, operating as a Managed Library, and periodically test its clone that resides on an USB 3 drive, so things should work either way.

     

    Is you TBolt 2 drive formatted as OS Extended (Journalled)?

     

    Ernie

  • by probable,

    probable probable Mar 23, 2014 9:51 AM in response to Ernie Stamper
    Level 1 (0 points)
    Mar 23, 2014 9:51 AM in response to Ernie Stamper

    Yes the drive is formatted OS Extended (Journaled) but the library is referenced not managed.  I do not keep a clone of the drive but maintain backups of all the data on a separate NAS drive.

  • by Ernie Stamper,

    Ernie Stamper Ernie Stamper Mar 24, 2014 6:47 AM in response to probable
    Level 8 (37,588 points)
    Video
    Mar 24, 2014 6:47 AM in response to probable

    I suspect something related to the drive connection, but have not pinned down what might be the problem.

     

    Is the NAS drive constantly connected?  How do you back up to the NAS drive.

     

    Ernie

  • by probable,

    probable probable Mar 24, 2014 6:59 AM in response to Ernie Stamper
    Level 1 (0 points)
    Mar 24, 2014 6:59 AM in response to Ernie Stamper

    I am using the internal 1TB PCIe based flash boot drive for the library and only use the external drive to store the referenced images.

     

    I am using the NAS as a backup.  The main storage for my images is the thunderbolt connected Pegasus2 R4 disk array.  The Pegasus is always connected and is running whenever the computer is active.

     

    I thought the thumbnails and previews were stored in the library.  If that is true, the external drive should not be a big factor.  It is true that the images must be available if adjustments are being made but only to reference the original image data which remains untouched.

  • by Kirby Krieger,

    Kirby Krieger Kirby Krieger Mar 24, 2014 7:05 AM in response to probable
    Level 6 (12,521 points)
    Mar 24, 2014 7:05 AM in response to probable

    Hardware issues are not my forte, but at this point I would trash Aperture prefs (details are on Apple's Aperture trouble-shooting page) and flush PRAM just to eliminate those as possible causes.

     

    Message was edited by: Kirby Krieger - removed small speculation

  • by Ernie Stamper,

    Ernie Stamper Ernie Stamper Mar 24, 2014 7:38 AM in response to probable
    Level 8 (37,588 points)
    Video
    Mar 24, 2014 7:38 AM in response to probable

    On a conceptual level, it should not be a problem, but a Preview is related to a Version, and a Version is related to one Original/Master.  There can be multiple Versions, all of which must point to a single Original.

     

    You are not adjusting a Preview, but rather a Version.  What you see as you adjust is a new rendering of the Version, and is not the Preview you saw when you decided to adjust, I believe.

     

    There are on the order of 8 or 9 other files related to every Original even if only one Version in the Package that is the Library. Very complex indexing going on at all times.

     

    Please open an image, and before attempting to adjust, click on File, and choose Show in Finder -- is the Finder image the correct one?  And in the correct location?

     

    Now attempt to adjust.  Does the image change?  If so, again us Show in Finder and check.

     

    Ernie

  • by probable,

    probable probable Mar 24, 2014 8:33 AM in response to Ernie Stamper
    Level 1 (0 points)
    Mar 24, 2014 8:33 AM in response to Ernie Stamper

    Finder indicates the correct file whether or not the image in the viewer is viewing correctly.  Lately I sometimes also have a previous view of the same image show up while I am making adjustments.  For example, if I zoom in on a part of an image and then zoom back out and make an adjustment, the zoom view shows while making the adjustment.

  • by mhorowitz,

    mhorowitz mhorowitz Apr 20, 2014 10:39 AM in response to probable
    Level 1 (0 points)
    Apr 20, 2014 10:39 AM in response to probable

    Haaving the exact same issue and it only started in March. I suspect one of the recent upgrades? Any luck with a solution?

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