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Data loss when importing to iPhoto?

314 Views 9 Replies Latest reply: Nov 9, 2013 11:56 AM by Old Toad RSS
Jon Crystal Calculating status...
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Nov 8, 2013 1:44 PM

I just uploaded a bunch of new photos and noticed that the file size for most is much smaller in iPhoto than on the desktop. I am not aware of any settable compression options in iPhoto....did I miss something?  For example, on the desktop Get Info for one file shows 5.1M, and in iPhoto it shows 3.1M, both with the same number of pixels. Thoughts?

  • léonie Level 8 Level 8 (46,350 points)
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    Nov 8, 2013 1:57 PM (in response to Jon Crystal)

    Jon, that is reilly weird.

    How are you importing to iPhoto, and how are you comparing the sizes?

    iPhoto has been designed to preserve the quality of any imported photo - the lossless workflow is one of the main features of iPhoto. It should not happen, that the filesize changes on import to iPhoto. iPhoto is supposed to store the original photo exactly "as is".  So where do you see the smaller file size in iPhoto? What kind of photos did you import? Jpeg, raw?

     

    Léonie

  • Terence Devlin Level 10 Level 10 (121,630 points)
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    Nov 8, 2013 3:47 PM (in response to Jon Crystal)

    and Info within iPhoto to compare

     

    What are the sizes?

  • léonie Level 8 Level 8 (46,350 points)
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    Nov 8, 2013 11:14 PM (in response to Jon Crystal)

    I used GetInfo in the finder version, and Info within iPhoto to compare. All files were JPEG Image files.  A few files show the same size, most are smaller in iPhoto.....

    Have you looked at the file that iPhoto is storing?

    With "File > Reveal in Finder > Original file"?  Does it show the same size as your version on the Desktop?

     

    Have you edited your file in iPhoto after import? The edited jpegs may have different sizes , but the info panel should show the size of the original and not of the edited version.

  • Terence Devlin Level 10 Level 10 (121,630 points)
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    Nov 9, 2013 7:58 AM (in response to Jon Crystal)

    That's the preview, a medium quality version of the shot that's used when you access the library via a Media Browser or drag and drop.

  • Old Toad Level 10 Level 10 (112,980 points)
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    Nov 9, 2013 9:11 AM (in response to Jon Crystal)

    Are any of these photos in the portrait orientation?

     

    OT

  • Old Toad Level 10 Level 10 (112,980 points)
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    Nov 9, 2013 11:56 AM (in response to Jon Crystal)

    When portrait photos are taken they are given a tag that tell other apps how to display them.  When iPhoto sees that tag it makes a modified version of it rotated to the correct orientation for use by iPhoto and for using in other applications/situations.

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