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HELP! only some .tif 's will burn

179 Views 8 Replies Latest reply: Aug 19, 2005 5:02 PM by Laura Drew1 RSS
Laura Drew1 Level 2 Level 2 (450 points)
Currently Being Moderated
Aug 19, 2005 5:02 PM
All of a sudden my professional photographer friends' mac is acting strange.
when she tries to burn a folder with .tif (raw) images it will burn some, but some give the error :error: "finder cannot complete the operation b/c some data in "MG_224.tif"
couldn't be read or written. error code -36
can someone help me out? I have looked on th ese boards but could not find anything. She is using a Canon EOS digital camera.
thanks! Laura
  • Prisoner404 Calculating status...
    Currently Being Moderated
    Aug 18, 2005 4:44 PM (in response to Laura Drew1)
    Can you open that tif file (MG_224.tif) and look at it? Try doing that with an application on the computer, like Photoshop or maybe even Preview. If you can't open or manipulate it, it may be damaged/corrupt.
  • Peter Russell Level 1 Level 1 (80 points)
    Currently Being Moderated
    Aug 19, 2005 12:39 PM (in response to Laura Drew1)
    Hi Laura. As I have just had exactly the same problem I think that I have also discovered the cure.

    1. TIFFs are NOT RAW files, although it should not make any difference to your problem. RAW files may be opened and then saved as TIFFs, or whatever file type you choose in Photoshop or similar programs.

    2. The type of camera that you are using should not cause any problems.

    The problem occurs when part of the file is corrupted, most usually when burning a CD or DVD. I have noticed that cheap or otherwise incompatible media will cause this problem in SuperDrives and other drives.

    The media appears to burn correctly, even passing the Toast verification test, but will either not mount or give a -36 error when trying to access or copy the files.

    The simple answer is to test and then buy the correct, usually not the cheapest, media. I found that doing this immediately cured my problems. I burnt 60 DVDs and CDs containing over 4000 RAW and TIFF files from a project. All media passed the verification test but over 20% of the media would not mount, or if they did so, contained corrupted files. Moral of the story - cheap is NEVER the best!
  • Peter Russell Level 1 Level 1 (80 points)
    Currently Being Moderated
    Aug 19, 2005 2:35 PM (in response to Laura Drew1)

    You seem, at first glance, to have a multitude of problems here as well as a degree of confusion!

    The key problem is not, per se, with your Mac but more with your friend's memory cards and possibly the way she is copying the image files from the card to the Mac.

    Firstly, every time yshe downloads images from her card to the Mac she should reformat the card IN the camera. Do not just delete the files from the card and then reinsert it in the camera as this tends to lead to all sorts of problems. I shoot around 40,000 shots a year and now religiously stick to the above standard with no problems.

    Secondly, life becomes much easier if she copies the image files using a Firewire card reader rather than with a USB connection. Some digital cameras have Firewire connections although I don't know which model your friend is using. I have noticed that using a slow (relatively) USB connection may have a problem later with files, although I cannot prove this conclusively. In the early days before getting my Firewire reader I noticed a few problems with corrupted files although there might have been oher causes.

    However, the most likely cause of her problems is bad media card management. Get her into the habit of formatting the card EVERY time it is reinserted into the camera. According to Lexar and SanDisk there should be no problem with formatting their cards many thousands of times.

    Naturally your friend will only notice the problems with an error message on the Mac, although I suspect they originate from outside it.

    Try the above and see if good media management cures the problem, although I know it is rather a case of shutting the stable door after the horse has bolted!
  • Peter Russell Level 1 Level 1 (80 points)
    Currently Being Moderated
    Aug 19, 2005 4:01 PM (in response to Laura Drew1)

    You MUST format the card IN the camera using the format command in the sub-menu. So far as I am aware ALL cards in cameras are formatted using FAT32, NOT Mac HFS and must be done in this manner.

    Do not try to use Disk Utility as this will probably not work and only introduces another, unnecessary, step. Create standards after reading the camera user manual and then stick to them.

    Doing this properly should mean that you have no further problems in this particular field at least! Good luck.


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