RAW files incredibly slow in Finder - OS Yosemite

Discussion in 'OS X Yosemite (10.10)' started by Jiyangc, Nov 29, 2014.

  1. Jiyangc macrumors newbie

    Nov 29, 2014
    Just updated to Yosemite on a Macbook Pro 13'' Unibody from 2010. Viewing Nikon RAW files has been fine in Mavericks but now with Yosemite it is incredibly slow switching between photos in Preview (busy icon). I have tried deleting RawCamera.bundle and RawCameraSupport.bundle from /System/Library/CoreServices and installing Digital Camera RAW Compatibility Versions 5.07, 4.06, and 4.03 to no avail.

    Anyone have the same problem?
  2. jms969, Nov 30, 2014
    Last edited: Nov 30, 2014

    jms969 macrumors 6502

    Feb 17, 2010
    Yup same problem :confused:

    My two pseudo work arounds are...

    1. Immediately import the raw files to Lightroom and let it generate smart previews (much much faster)

    2. I used to never shoot in any form of jpg but now I shoot in raw+basic jpg, with the jpg files going to the second memory card. The small jpg files open significantly faster in preview. I delete them all (jpg) after I import into Lightroom.

    It is just another issue with Yosemite that makes the OS not ready for prime time.

    PS. I am not sure if Aperture would work as well... I suspect Apple has an issue with their Camera Raw Implementation in Yosemite and Adobe does not have that issue...
  3. Jiyangc thread starter macrumors newbie

    Nov 29, 2014
    Glad I'm not the only person with this issue as when I searched the forums I didn't come up with much. I usually do a general edit in Preview before getting the RAWs off my memory card and onto my hard drive, but now I just get it all onto my HD and use Lightroom. Different workflow but works nonetheless. I hope they come out with a fix soon!
  4. jms969 macrumors 6502

    Feb 17, 2010
    Let me know how it works out for you... :)
  5. Henrik-Hansson, Jan 4, 2015
    Last edited: Jan 4, 2015

    Henrik-Hansson macrumors newbie

    Jan 4, 2015
    Stockholm, Sweden

    So today I went to the genius bar with exactly this problem. They told me to go to Disk Utility, choose your hard drive and click Repair Disk Permission.

    Before doing this, previewing RAW-files took 3-10 seconds, now I view them almost instantly. Hope this works for someone else too.
  6. Meister Suspended


    Oct 10, 2013
    Same problem here. What camera and raw-format are you shooting?
    Lossless compressed 14-bit
    ~24mb per file
  7. SCDPhotog macrumors newbie


    Dec 17, 2015
    This worked really great for me! Thank so much

Share This Page