Reading a camera CR2 (raw) file

Hello all,
withouth any experience and not much technical knowledge, I need the raw data from my Canon camera (40D) right out of the sensor exactly as it was recorded. The purpose is scientific, images will be analyzed in MATLAB!
I converted CR2 files in DNG files, but can not get the info about linearization curve. With no knowledge about the curve, there is no guarantee that image is presented exactly as it was recorded.
If I use Adobe DNG Converter to do the dematrixing by choosing Custom > Linear(demosaic) and Uncompressed, will that answer my prays?
I doubt while reading some answers on the Adobe Community: http://forums.adobe.com/thread/995391. I lack some knowledge on that issue and do not understand the problem stated completely.,
Please help!
Thanks in advance, Matija.

Hello,
I will definitely check Rawdigger! Thank you!
In the mean time I found a useful article:
Capturing linear images (http://www.mit.edu/~kimo/blog/linear.html)
I just installed DCRAW and am testing it; this freeware gives you control over all processing being done in conversion step from CR2 to i.e. PPM.
For more details on DCRAW please check:
http://www.guillermoluijk.com/tutorial/dcraw/index_en.htm
Please provide feedback!
M.

Similar Messages

Preview of CR2 raw files on import window from camera

Hi
I have this problem with my Canon XTI. When I connect the camera to the computer and open the import dialog window, I can not see the previews of my CR2 raw files. But if I copy the CR2 files to he hard disk and try tho import from it, then previews are shown on the import window.
Can anybody help me?

Probably because the program is trying to write back a marker to the card as it "opens" the images for the preview and the camera won't let it.
It's not a good idea to import images directly from the camera anyway. Card readers are really cheap - and they WILL let you see the previews.

Cannot open CR2 RAW files in Photoshop

To support RAW files from my new Canon Powershot G11 I downloaded to Camera RAW plug-in 5_6 dmg from adobe. I manged to be able to view the CR2 RAW files in Bridge. However when trying to open a CR2 RAW file from Bridge into Photoshop I get the following error message:
"Uanable to use Camera Raw plug-in, it is not compatible with this version of Photoshop (CS3)."
How do I overcome this problem?

Jens Erik Ebbesen wrote:
To support RAW files from my new Canon Powershot G11 I downloaded to Camera RAW plug-in 5_6 dmg from adobe. I manged to be able to view the CR2 RAW files in Bridge. However when trying to open a CR2 RAW file from Bridge into Photoshop I get the following error message:
"Uanable to use Camera Raw plug-in, it is not compatible with this version of Photoshop (CS3)."
How do I overcome this problem?
You have two options with Photoshop.
Upgrade to CS4 so you can use the latest Adobe Camera Raw plug-in, or use the DNG converter from the Downloads page above to make readable versions of your CR2 files.

Unable to open Canon 7D CR2 raw files in Photoshop CS6

Hi Folks,
I have been trying to open Canon 7D CR2 raw files in Photoshop CS6 (Extended) (Windows 8.1) but I'm always getting the error "Could not complete your request because the file format module cannot parse your file".
I installed the Camera Raw plugin ver 8.8.0.397 today. Did this initially by downloading and running the CameraRaw_8_8.zip available here Camera Raw plug-in installer. Still got the error.
Went and did the Check Updates in Photoshop and updated the Camera Raw (and other components) but STILL cannot open the CR2 files.
I can see the thumbnails in Bridge but when I double click to open them in Photoshop, same error.
Cannot seem to get past the "Could not complete your request..." error.
Any ideas?
Cheers,
Doug...

Hi Folks,
Thanks for your replies and assistance so far, very much appreciated. Its a very frustrating problem... this should be one of those things that just work.
I have uploaded two sample pics taken with my canon 7d. If you get a chance, could you please try opening these images to see if they work on your machine.
http://www.bespoke-gems.com/images/gemstones/misc/rawtest1_canon7d.cr2
http://www.bespoke-gems.com/images/gemstones/misc/rawtest2_canon7d.cr2
I have tried opening them on both my office and home computer but neither of them work.
Hmmm... could it have anything to do with the lens (Canon Macro Lens EF 100mm1:2.8 USM)
Many thanks!

Corrupt CR2 RAW files

Has anyone found a fix for CR2 RAW files being corrupted? I have read all the thread postings I could google on various forums and can not seem to find any solid fix to the problem.
I purchased the Canon 400D for my trip to Asia and shot over 1500 photos, almost all in RAW. I transferred 90% of the images onto CDR and DVD media to make more room my Sandisk Extreme III 4gb card. Of the 1500+ photos, 150+ of my images remain corrupted.
I am posting this in hope that someone has found a fix.
Hardware:
Canon 400D Xti Rebel
Sandisk Extreme III 4gb
Atech Flash Technology "Pro-Gear" USB 2.0 card reader
IBM/Lenovo Z60M desktop replacement
Software:
Canon's DPP (Digital Photo Professional)
Microsoft Camera Raw Viewer (does not work with CR2)
Adobe CS2 with latest upgrades
I filled my CF card up four times during the duration of my trip.
Listed in order:
1 - 6 CDR's
2 - 1 DVD
3 - 3 CDR's
4 - straight transfer from CF card to my Z60m laptop
Of the four times I DL'ed images, the first 4 CDR's were the only folders that did not carry any corrupted files. All files were DL'ed onto a PC using my Atech card reader locally before burning.
Of all the images I took, I noticed a total of about 2 to 3 images that are shown to be corrupted when played back on my camera. I reviewed each and every file anywhere between 1 to 5 times on my camera prior to transfer and they all looked fine (maybe the camera plays back the embedded jpegs?). I would delete all images using the in camera function. I formatted the card before each fresh shoot. Originally thinking it was a CD/DVD transfer issue, that would not explain why some images from the last batch off the CF card (straight from CF card to reader to laptop) were also corrupted.
Here's my workflow (I'm new to RAW): I used Canon's DPP for a day and all the thumbnails displayed perfectly. Like CS2, I believe the software first displays the embedded jpg Thumbnails before loading the actual RAW preview. I did NOT notice any corrupted images based on the rendered thumbnails but I have not verified all my images first before making a strong claim to this.
I have not installed my copy of CS2 at this point and anxious to use Adobe Bridge, I did so the following day. After playing with some images, I began to notice some weird lost of colors in some of my thumbnail preview images. I attempted to open these files and DPP gave me a corrupt image notification. I tried it in Adobe Bridge and the images opened only to show me that either the image had part of it white, black or various colors. Some images were entirely black.
On the advice of a forum poster, I used Fastone Image viewer to see if I can save the image as jpegs and it worked but the jpeg was a smaller both in file size and dimension; not a complete lost at least. I did not recall having any image corruption with the exception of about 3 images (at most) which was witnessed on the camera itself during playback which prompted me to think that there was a bad sector on the CF card.
Notes:
- One forum poster suggested that Microsoft's RAW viewer were causing problems. Originally, I attempted to open one or two CR2 files and MS RAW viewer launched but gave me errors. I DL'ed the latest version and installed it and it will also not work on CR2's. After reading the MS page on the RAW viewer, it shows that CR2 was not supported yet. I then uninstalled the proggie after reading the posting.
- Another forum poster suggests that it is a bad card reader. I will attempt to transfer images directly from the camera going forward.
I'd hate to have this happen again but can not fathom why the problem will not reiterate itself with more RAW transfers going forward. Hopefully, someone has a good solution. Thanks. -Will

Rita,
The process for determining what is causing the files to be corrupt can be a tedious one depending on the following:
1. Can you review the images on your camera's LCD screen without problems? If not then the problem is most probably either a corrupted/faulty memory card or a faulty camera. If this is the case then your best bet at recovery (of sorts) is to use a program such as BrezzeBrowser from BreezeSys to extract the embedded jpeg versions of the corrupted RAW files from within each RAW file. Chances are, you won't manage to actually repair the corrupted RAW file but the jpegs are better than nothing.
2. If the images review ok on your camera but are corrupted when viewing on your computer and there seems to be no other problem with other files on your computer then it may be either a faulty card reader or usb/firewire cable between the card reader and the computer that is the culprit. Try the card reader with a different cable and also try a different card reader to determine the cause of the corruption.
3. If your symptoms are that you get different files corrupting over time when viewing them on your computer then the problem may be any one of either failing RAM memory, hard disk, hard disk controller or IDE/SATA hard disk cables. This is where the troubleshooting can be pretty tedious testing then eliminating each item from the list of suspicious pieces of hardware. Try the card and card reader on an altogether different computer to see if the files transfer correctly to that computer. If so then the problem lies with your computer hardware. If you haven't already done so at this stage, backup all your important data immediately (hopefully you keep backs anyway).
Hope this helps.

Is there a plug-in that will allow me to view CR2 (raw) files from a Cannon 5D Mark III to PSE 9 ?

is there a plug-in that will allow me to view CR2 (raw) files from a Cannon 5D Mark III to PSE 9 ?

The 5D.3 was first supported in ACR 6.7 which you need PSE 10 to use, so there is no plug-in for PSE9 that will allow opening the files from a camera newer than when PSE9 became obsolete.
Besides getting PSE12, assuming it is supported on your current computer—check the specs, you can use the free DNG Converter available from http://www.adobe.com/downloads/updates.html
to convert your CR2 files to DNG files that are compatible with older versions of ACR. Be sure to set your DNGC compatibility settings to a version old enough to be openable with PSE 10’s ACR.
As far as whether the OP is serious, it doesn’t hurt to ask the question before spending money on something you didn’t need.

Can't view CR2 raw files in Bridge CS6 from Apple laptop pro - why?

I've got Adobe Bridge CS6 installed on both my desktop and laptop pro. For some reason I am not able to view the CR2 raw files on the laptop pro. Does anyone know how to fix this issue?
Thanks!!

"CR2" files is meaningless. You need to specify the exact Canon camera model that generated them. There are many flavors of CR2 raw files.

Latest Lithroom 5.6 does not recognize my .cr2 raw file format and Windows 7 it asociates with my older raw plug in in Ps CS5.5. I am not able to change default program for .cr2 in the properties pannel...

Latest Lithroom 5.6 does not recognize my .cr2 raw file format and Windows 7 it asociates with my older raw plug in in Ps CS5.5. I am not able to change default program for .cr2 in the properties pannel...
every new released update of Lr from v 5.2 changed somethin in my Windows 7 Professional settings. I am stucked. Can somebody help me please? Many thanks. Andrej

Hi Jim,
yes after I imported my .cr2 raw files into new catalog it started to work. Windows 7 still does not recognize them but I can edit them as you said within the Lr5.6 and then export them into .psd or .dng files...as needed.
I bought Lr5 only because I got present - my new camera Cannon 70D and because my older Photoshop CS5.5 raw plugin does not recognize. cr2 files.
Many thanks for your help.
Andrej.

Importing cr2 raw files won't work on ios 6 when it worked fine on ios5. Anyone have a solution?

I have been importing cr2 raw files to my iPad using ios 5 but importing cr2 raw files won't work on ios 6. Sees files in camera but when import stops it fails with an exclamation mark in red circle. Anyone have a solution?

Don't know if you care anymore or it applies, but I was able to get things working but it took drastic measures.
I had to do a full system reset and update by doing the following:
- Make note of all your settings in your system and apps especially accounts and forget about in app data that's only on your iPad and not in a cloud service because it will be gone after this
- Connect iPad to Mac and startup iTunes
- Hold down Home and Power buttons simultaneously for about 8 sec until the screen turns black
- Release the Power button but continue holding the Home button until there's a popup on your screen which indicates it's in recovery mode
- Follow the instructions to recover your iPad but recover it to factory state, not recover from a backup
- Reinstall all your apps and content
- Reconnect to all your services on your system and apps
I could not restore from a backup since it brought back my bad data too. It also didn't restore my music and no matter what I tried it wouldn't put my music onto my iPad. Had to start clean.
It appears over time that the system gets dirty and there's lots of bad data that can't get resolved. This is especially true if some of your apps have crashed a bunch.

Why can't I download Canon S100 CR2 RAW files into PSE 10?

I am using PSE 10 with a Canon S100 camera. I am successful in downloading all of my jpeg files and RAW CR2 files from my older Canon Rebel, but not with the Canon S100 CR2 Raw files.
When first downloading from the Canon S100 camera into PSE 10 and later doing them manually, I receive the following messages: Nothing imported...files are not supported file types or alread in catalog. File damaged or in a format that cannot be included in the Elements Organizer.
These problems files, by the way, were automatically added to my Window's My Pictures catalog and are perfectly fine.

Thank you for the info. It worked great, once I was
able to get around a second problem that prevented updating
from within the PSE 10 application (error U41M1C212). That
problem was solved by disabling the MS Virtual WiFi Miniport
Adapter (located in the Network and Sharing Center control
panel). It just goes to show me once again, how complex
computer apps are and how much we all have to rely on each
other to get anything to work properly (frustratingly
enough, since the companies we paid good money to for
their problematic software are not very helpful). Thanks
again.
            Re: Why can't I download Canon S100 CR2 RAW files into
PSE 10?
            created by 99jon in Photoshop Elements - View the full discussion
Try opening a CR2 directly from a folder by right-clicking
and choosing open with Photoshop Elements editor, if that
dosent work, update the appliactaion (required for the
S100V)
In the Editor menu click Help >> Updates
Then install amera raw 6.7
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Lightroom 3 Corrupting .CR2 RAW files on import

I have never used RAW files before yesterday. About to shoot a wedding in a couple days so desperately need a fix or at least some advice for a workaround.
Here's my hardware list:
Canon 7D
SanDisk Ultra II 2 & 4 GB CF cards
Windows 7 64x
Internal card reader, not some flimsy USB thing
Lightroom 3
Problem:
After importing .CR2 RAW files using Lightroom 3, not Bridge, I found that some (not all) of the images appear to be corrupted. On the camera they look fine.
For a short moment, in Lightroom, they look fine, but then after clicking the thumbnail they instantly develop strange corruptions, like pink/yellow/opaque static.
This is not one of my photos, but the corrupted image looks just like this: http://thekuipers.org/images/IMG_2279.jpg
Used some advice and downloaded Fast Picture Viewer, which allows me to view the .CR2s in the folder I imported to, and MOST of them look fine now. Reimported to LR and now only like 8 of 200 images are corrupted. They still export to .jpg as corrupted.
I had formatted my CF cards immediately after importing, only to find the corruptions after. Using Stellar Phoenix Photo Recovery to try to reimport manually the residual data from CF cards. Will know if that works soon.

From previous posts on this forum there are several things that can cause this type of corruption on import; faulty, CF cards, card reader, cable, and RAM.
On my system it turned out to be faulty ram. Since changing my ram I have not experienced any further problems.

CR2-RAW files & Elements 7

I have Elements 7 (not premium) and cannot bring up Canon's CR2-RAW files for post processing. I read where there is an update but the threads that start to take me in the direction of update for it specify for "Premium" version of Elements. Can anyone help or give me advice. Perhaps if buying Elements 10 assures me that CR2 files will work it may be worth buying. Open to opinions. I have a Canon T2i camera.
Thanks
James.

Just spotted you use a T2i
That camera needs at least ACR 5.7 or 6.1 both of which can not be installed in PSE 7.
You would need PSE 8 or later or you could download the free DNG converter. The converter will take your CR2 files and convert them to DNG raw files which can be read by PSE 7.
Brian

Canon 5D CR2 RAW Files Have Visible Artifacts

There's a digital dithering pattern that's clearly visible on CR2 RAW files even with no adjustments in Aperture. Here are two example screenshots from Photoshop. The first is an 800 ISO image and the second is a 50 ISO image. I shoot RAW + JPEG.
In the first, the JPEG from the camera, zoomed at 400% (top) and the equivalent JPG export at quality "12" (lossless) from the RAW image in Aperture with no adjustments (bottom). This is just the RAW, exported to JPEG at lossless 8 bit, same area at 400%. I experimented with 16-bit TIFF and PSD exports as well and the dithering pattern is the same:
http://www.pipsqueak.com/imagehosting/ApertureJPGBug.jpg
In the second, I took the original RAW, converted it to DNG format (I have to in order to use Adobe Camera Raw on CS 1) and imported into Photoshop using ACR "camera default" settings. I show that image at 12.5% at the very top and a detail in a window at 400% in the middle of the stack. The bottom image was created by bringing the RAW into Aperture and, without making any adjustments, exporting it as a 16-bit Photoshop file.
I picked the blue area because it's easy to see the dithering pattern in a solid color. But it's there across the image.
This is not just a high ISO or highly adjusted image problem. This is an EVERY image problem, at least with Canon 5D CR2 files.
http://www.pipsqueak.com/imagehosting/ApertureExport_Bug02.jpg
I've taken the same file, processed it using Adobe Camera RAW in Photoshop, exported it as a 16-bit PSD file and brought that into Aperture. Exports from that file are flawless. So I conclude that this has to do with the way that the OS is converting RAWs from the Canon 5D (or CR2s generally).
Can this be a priority to fix? If Aperture can't export high quality images, its other truly admirable features will be for naught.

Ian wrote a really good description of what RAW files are:
http://discussions.apple.com/thread.jspa?messageID=1303439&#1303439
Since the RAW file is encoding the chip information, and the two 1D2 and 1Ds2 cameras use different chips (they do, don't they?), then it's conceivable that they could have different results in Aperture.
On the other hand, I thought that CR2 files had the same underlying file structure, so it's strange that they encode differently.
Might it be possible to take some kind of test image with both cameras that is basically identical and has some areas that are dark? It would be interesting to compile a list of those cameras that have conversion issues and those that don't. I know the Canon 5D conversion is not so good, and that there's an Olympus problem (although I don't remember the camera). On the other hand, there are a number of Nikon users who seem pretty pleased with their conversions.

Opening Canon 6D .CR2 raw files with CS5 Extended

Can't open Canon EOS 6D raw files with CS5. What is the minimum I need to do to open Canon EOS 6D .CR2 raw files in Photoshop CS5 Extended version 12.1 x64, and Brige CS5 version 4.1.0.54, and Camera Raw version 6.7.0.339? I would rather not have to go through the hassle of first converting all files with the Adobe DNG - is there another option? Can I upgrade my Adobe software?

Im having the same problem, and i use CS6
Do you know if CC can open 6D .CR2 files?
Thanks!

Corrupt/Non Viewable Canon Xs .CR2 Raw files

Hi All,
I am having issues with my importing/viewing my Canon Xs .CR2 Raw files. I import them into Aperture and they do not show up correctly. I get either a black or a green and magenta static with lines for an image. I am currently running both the latest Aperture Version (3.1.1) and Digital Camera RAW (3.5.0). I have been searching for three days and cannot find a solution to this problem. I have found a few other people having issues as well. Here are some snippets/links from/to these posts:
http://discussions.apple.com/thread.jspa?threadID=2667652&start=0&tstart=0
“The latest Aperture 3.1.1 update breaks Canon's "Medium RAW" compatibility; Aperture used to be able to read the "Medium RAW" CR2 files before this update, but not anymore. Also, updating to the latest "Digital Camera RAW 3.5.0" does not solve the issue.”
If anyone can please help, it would be greatly appreciated.
Thanks,
Jeff

>in which respect is ACR4.4.1 so much better than it's predecessors?
In a gazillion ways:
http://photoshopnews.com/2007/05/31/about-camera-raw-41/
and
CLICK HERE FOR THE BOOK!

Reading a camera CR2 (raw) file

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