Helpful Posts Helpful Posts:  0
Results 1 to 16 of 16

Thread: Photoshop CS2 Error When Loading DNG Files

  1. #1

    Join Date
    Jan 2009
    Location
    Sydney, Australia
    Posts
    362

    Photoshop CS2 Error When Loading DNG Files

    Hi all,

    Following Colin and others advices on my previous post "Two questions about working on raw files", these two days I have been doing some practice on raw files.

    Now I understand how to convert camera raw file *.CR2 into format "*.psd" and "*.tif", and
    use Photoshop to do some adjustment on these files.

    I also down load free DNG converter (5.2 version), and can also convert "*.CR2" file into
    "*.DNG" file, which, from my reading, is the best format for storing raw files.

    Now my question is: it seemed that I cannot open file ".DNG" from my Photoshop CS2, why?

    Also, I noted that DNG file is slightly smaller than CR2 camera raw file, while "*.psd" and ".tif" are much much bigger than CR2 file, does this mean ".DNG" file lost some information from CR2 file?

    Many thanks in advance!

    Yan

  2. #2

    Join Date
    Dec 2008
    Location
    New Zealand
    Posts
    17,662
    Real Name
    Have a guess :)

    Re: Working on raw files - another question

    Hi Yan,

    You should be able to open a *.DNG file in ANY version of photoshop CS - what happened when you try it? Do you get some kind of error message?

    Re: Size - RAW files be it in *.CR2 or *.DNG format are compressed by default - The DNG ones probably just use a different compression algorithm. The very earliest DNG format didn't save black-masked pixels (a relatively minor thing), but all subsequent versions save everything, so you can rest assured that you're not losing anything. I have no hesitation in deleting my *.CR2 files once they're converted to *.DNG.

  3. #3

    Join Date
    Jan 2009
    Location
    Sydney, Australia
    Posts
    362

    Re: Working on raw files - another question

    Colin,

    I can view DNG file using picasa photo view in Wondows.

    From Photoshop, I go to "File => Open as ...", then in the window "Open as", I can find
    that the fomat "Photoshop Raw (*.RAW)" can only be used to open the file, but the opened file is not viewable, it is a gray square.

    Is this normal?

    Thanks,

    Yan

  4. #4

    Join Date
    Dec 2008
    Location
    New Zealand
    Posts
    17,662
    Real Name
    Have a guess :)

    Re: Working on raw files - another question

    Hi Yan,

    You can't open a file "as" a DNG - all that you should need to do is double click the DNG file and it will start photoshop and pop up the DNG converter, unless I'm misunderstanding what you're saying?

    The other option is to open them in Adobe Bridge.

    Working now?

  5. #5

    Join Date
    Jan 2009
    Location
    Sydney, Australia
    Posts
    362

    Re: Working on raw files - another question

    Colin,

    I am sorry, it still doesn't work. What I did was as following:

    (1) use DNG converter to convert .CR2 file into .DNG file;
    (2) then if I double click the .DNG file, the pisaca photo viewer is initiated and shows the picture;

    (3) So, I open Photoshop, go to birdge to open all file folders;
    (4) I move to the folder containing .DNG file, it dose not show anything - which seems that Photoshop does not recognised .DNG file;
    (5) Then I go to "File=>Open as..." to get "Open as" window, I see in "Open as" option,
    no DNG format there (though all other formats are there), so I tried format "Photoshop Raw
    (*.RAW)", then DNG file shows up,
    (6) I open it, it is a gray square.

    I don't know which part I went wrong. Since picasa photo viewer can view my .DNG fie,
    so the file should be OK. I don't know why Photoshop has no ".DNG" format option to open the file.

    Thanks for your help.

  6. #6

    Join Date
    Dec 2008
    Location
    New Zealand
    Posts
    17,662
    Real Name
    Have a guess :)

    Re: Working on raw files - another question

    It sounds to me like Picasa has been associated with the *.DNG filetype, instead of Photoshop. Are you on a Windows XP or Windows Vista PC?

  7. #7

    Join Date
    Jan 2009
    Location
    Sydney, Australia
    Posts
    362

    Re: Working on raw files - another question

    Colin,

    I am using Windows XP.

  8. #8

    Join Date
    Jan 2009
    Location
    Sydney, Australia
    Posts
    362

    Re: Working on raw files - another question

    By the way, if I right click .DNG file, indeed two "Open with" options show up:
    Pisaca Photo Viewer and Adobe Photoshop CS, if I click Adobe Photoshop CS,
    Photoshop is initiated, but it comes to an error message:
    "Could not complete your request because it is not the right kind of document".

  9. #9

    Join Date
    Dec 2008
    Location
    New Zealand
    Posts
    17,662
    Real Name
    Have a guess :)

    Re: Working on raw files - another question

    I'd be inclined to get DNG associated with Photoshop instead of Picassa first, and see what happens from there.

    Fir an XP box you need to open any folder -> click on TOOLS then FOLDER OPTIONS - click on the FILE TYPES tab - scroll down until you see .DNG - highlight it and then (off memory), click "change". If in doubt, delete the association altogether and when you double-click a DNG file winXP will tell you that there's no program associated with it, and give you the option to create an association.

    Try that and let me know what happens.

  10. #10

    Join Date
    Jan 2009
    Location
    Sydney, Australia
    Posts
    362

    Re: Working on raw files - another question

    Colin,

    I did what you suggested, now .DNG is associated with Photoshop CS.
    but when I double click, although Photoshop is initiated, it still comes to
    an error message "Could not complete your request because it is not the right kind of
    document."

    It seems something wrong with my Photoshop?

  11. #11

    Join Date
    Dec 2008
    Location
    New Zealand
    Posts
    17,662
    Real Name
    Have a guess :)

    Re: Working on raw files - another question

    Hmmm - that's a strange one.

    ... not really sure what to suggest. What version of Photoshop are you using? What version of ACR? Is it all up to date?

  12. #12

    Join Date
    Dec 2008
    Location
    New Zealand
    Posts
    17,662
    Real Name
    Have a guess :)

    Re: Working on raw files - another question

    Yan,

    I did a bit of googling, and a couple of things showed up.

    First up, I found this ...
    http://kb.adobe.com/selfservice/view...nalId=kb407110

    Although it's for Photoshop Elements, I think that most of it would apply to Photoshop as well - might be worth a look.

    I also discovered the Adobe Forums www.adobeforums.com - you might be able to get more help there?

    Possibly a re-installation of photoshop would help?

  13. #13

    Join Date
    Jan 2009
    Location
    Sydney, Australia
    Posts
    362

    Re: Working on raw files - another question

    Colin,

    Probably it is an old version, I can only see Photoshop CS 8.0 version,
    which probably is not CS2, and so does not adopt .DNG files maybe.

    Thanks for your points. I'll look at that, and if it is an old version, I'll consider to buy a latest version of Photoshop.

    By the way, I don't know what is ACR?

  14. #14

    Join Date
    Jan 2009
    Location
    Sydney, Australia
    Posts
    362

    Re: Working on raw files - another question

    Colin,

    I just looked at the link you gave to me. Now I understand that I need to install
    the latest ACR (now I know what ACR is). I'll follow the instruction to do that.

    Thanks very much for your help.

  15. #15

    Join Date
    Jan 2009
    Location
    Sydney, Australia
    Posts
    362

    Re: Working on raw files - it works now!

    Colin,

    I downloaded a new version of Camera Raw plug-in and replace it in my current
    CS 8.0 relevant folder. Now I can open .DNG file and use Photoshop to do adjustment on it.

    Thanks a lot for your help!

  16. #16

    Join Date
    Dec 2008
    Location
    New Zealand
    Posts
    17,662
    Real Name
    Have a guess :)

    Re: Working on raw files - it works now!

    Quote Originally Posted by Yan Zhang View Post
    Colin,

    I downloaded a new version of Camera Raw plug-in and replace it in my current
    CS 8.0 relevant folder. Now I can open .DNG file and use Photoshop to do adjustment on it.

    Thanks a lot for your help!
    Excellent news Yan - I was starting to scratch my head a bit on that one!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •