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canon cr2 corrupted cr2 hex editor exiftool

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#1 RobertBetz

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Posted 25 November 2013 - 18:05

Had a hard drive go south prior to backup of a wedding. Am in desperate need. Recovered from original media card the CR2 files I shot; was near 800 in all. All but 100 of them are corrupted as recovered from the CF card. They are all recognized as CR2 files in Explorer and even have the correct file sizes. But neither Lightroom, Canon Photo Utility, Photoshop or any other editors will open them. I've tried ExiftTool to extract JPGs, got file format errors. I have a Hex Editor but can't make heads or tails of what I'm looking at. I'm out of options and don't want to have to tell this couple I have lost their photos. Anyone out there have experience with repairing this type of file corruption that can do the work or have suggestions? PLEASE. Need help!!!!




#2 MSMG

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Posted 25 November 2013 - 18:16

Try http://www/cr2repair.com or http://freeware.cr2ecovery.com



#3 Praetor

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Posted 25 November 2013 - 18:21

Use PhotoInfo http://download.cnet...92_4-40684.html

 

Also post the ExiftTool result..



#4 OP RobertBetz

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Posted 25 November 2013 - 18:50

CR2Repair prompts me to download Stellar Photo Repair, which is the program I used to recover the CR2 files from the CF Card. But although it says in the description that the software can repair corrupted headers, I can't for the life of me figure out how to do that. 



#5 vcfan

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Posted 25 November 2013 - 18:58

can you upload 2 files, ill take a look at them.

#6 Praetor

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Posted 25 November 2013 - 18:58

you can use PhotoInfo to recover the JPEG from the EXIF, if the header is still OK or has minor damage; if the header is very damaged than even if the data is still OK (doubt it), you can't access it. Please post the EXIFTool result here, so we can see if it's still possible to recover something. Also did you try PhotoInfo? There's also Quick JPEG from CR2, but i haven't tried it: http://www.gdzid.com/QJFC.htm



#7 OP RobertBetz

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Posted 25 November 2013 - 20:07

The files are 22MB, will post elsewhere and put a link here. 



#8 OP RobertBetz

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Posted 25 November 2013 - 20:16

http://www.lostliner...es/_MG_8767.CR2

 

http://www.lostliner...es/_MG_8768.CR2

 

 

Quick JPG couldn't do anything. 



#9 OP RobertBetz

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Posted 25 November 2013 - 20:25

_MG_8767.CR2

Main Info

 

Filename

_MG_8767.CR2

Directory

H:

Image type

Canon Raw File

Width

0 pixels

Height

0 pixels

File size

23.1Mb

File created date

11/25/2013 12:17:38 PM

File modified date

9/7/2013 5:30:30 PM

Bits Per Plane

8

Planes

3

Dpi

72 pixels



#10 zhangm

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Posted 25 November 2013 - 22:57

Do you know what the original resolution of the images are?

Edit: I don't know what I'm doing.

http://sdrv.ms/1iMlFFn

#11 OP RobertBetz

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Posted 25 November 2013 - 23:17

Yes. All of the images came from a Canon 7D, so they are 5184 x 3456 at 240dpi



#12 zhangm

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Posted 25 November 2013 - 23:26

Yes. All of the images came from a Canon 7D, so they are 5184 x 3456 at 240dpi


Well, I guess these are about the right size... Are they supposed to have color?

Second image: http://sdrv.ms/1cLPosY

#13 vcfan

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Posted 25 November 2013 - 23:29

tada

 

or8tV1x.png

 

edit:zhangm beat me to it.

 

anyways, just mangled headers. the header is in the middle of the file. to fix the image, start at the header, cut from there till the end of the file, this will include the header and some image data, and paste this back at the top of the file, so whatever you pasted is the header+some image data,then the rest of the data will follow. save and you have your image. its tedious if you have many images. i might be able to write you a program to automate it. i cant do it now though.



#14 zhangm

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Posted 25 November 2013 - 23:38

I'm using XVI32 to view the files, find the second instance of FF E0 in each one, and delete up to that point.

http://www.chmaas.ha...xvi32/xvi32.htm
http://www.mikekunz....ile_header.html

XVI32 is scriptable, so check out the documentation on their site.

#15 vcfan

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Posted 25 November 2013 - 23:43

4p4X22t.png





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