Converting CR2

[Taiyosan]

Just discovered that the Canon RAW files shot with a Canon 20D in 2005, are no longer openable. (is that a word?) I have a few thousand of them and in '05, '06, etc., i opened them, worked on them in PS and saved them. Now i want to work with some of them and they are not viewable, openable, etc. Not with Canon software, Adobe DNG Converter, etc.. I don't know what to do ... do one of you know what to do? Who to ask? Where to search? Have you had this kinda problem?

The larger question, how did 5000 Canon files get corrupted and will that happen again as the years go by (yes, i'm converting them to dng, but not so at that time) ??? i've no idea how to address. Yes, all files are backed up in triplicate but they are copies of the unopenable files - sigh ... all help appreciated.

Thank you,

Taiyo

[kvbarkley]

The takeaway here is to save the originals.

This sounds like a PS problem, did you ask them?

Saving a CR2 after editing with PS is problematic.

Which version of DPP are you using to view the files? did you try DPP3?

[RobertTheFat]

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@Taiyosan wrote:

Just discovered that the Canon RAW files shot with a Canon 20D in 2005, are no longer openable. (is that a word?) I have a few thousand of them and in '05, '06, etc., i opened them, worked on them in PS and saved them. Now i want to work with some of them and they are not viewable, openable, etc. Not with Canon software, Adobe DNG Converter, etc.. I don't know what to do ... do one of you know what to do? Who to ask? Where to search? Have you had this kinda problem?

The larger question, how did 5000 Canon files get corrupted and will that happen again as the years go by (yes, i'm converting them to dng, but not so at that time) ??? i've no idea how to address. Yes, all files are backed up in triplicate but they are copies of the unopenable files - sigh ... all help appreciated.

Thank you,

Taiyo

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You need to be more specific. What version of what Canon software? And are you sure that these are .CR2 files and not .CRW?

Also, you seem to imply that the files that can't be read were last saved from Photoshop. Is that correct, or am I reading it wrong?

[Taiyosan]

KV: these are the originals and they are .CR2 - i just checked to be sure and my referance to files not opening are not referring to .tif or .pdf. Specifically, it is the CR2s that i cannot open; am using or trying to use, DPP 4, v 4.5.0.0. Yes, i tried DDP 3 with the same results - they seem to be well and truly corrupted.

[Taiyosan]

Bob, quite sure they are CR2 files as that's what the file says. Have tried both DPP 3 and 4 to no avail.

While some of the files that cannot be read were saved from Photoshop, the majority, maybe 90%, were never opened beyond viewing in the Canon viewer. ie, they were not opened specifically, just seen as one of many.

[RobertTheFat]

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@Taiyosan wrote:

KV: these are the originals and they are .CR2 - i just checked to be sure and my referance to files not opening are not referring to .tif or .pdf. Specifically, it is the CR2s that i cannot open; am using or trying to use, DPP 4, v 4.5.0.0. Yes, i tried DDP 3 with the same results - they seem to be well and truly corrupted.

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Have you tried it on more than one computer? What operating system are you using?

[Taiyosan]

Good question and, nope, not tried other computers. Am using a new (1 yr old) Mac Pro with OS 10.11.6; have two other Macs, each using the same OS as this. I think that's an interesting idea and i'll give it a try and learn if computer/OS has any particular effect. Thanks—

[kvbarkley]

If they are originals then what did you mean about being "edited in photoshop"?

[kvbarkley]

And just what error are you getting?

Can you see the jpeg preview?

Can EXIFTool get at the EXIF data?

[Taiyosan]

In the ImageBrowser EX there are only 'question marks' in the file window; in the EXIF (does the DPP have an EXOFTool?) window on the right there is exif info: file name, data type-CR2, Modified: 6/18/05 (imported date); Image Size: 0x0; File Size: 7.1MB, etc.

By editing in PS, i mean i did some work with them and savd them as psd or tiff and occasionally jpegs - those are either gone or not readable. This is true across many files in the master folder 2005, over 5k of the 9.5k files ... whatever happened effected many many files ... so far, i've not found any opening/reading solution.