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Mac does not recognize CR2 files from Canon T2i

First, I am posting in this forum because I need help for a problem that I think only experienced photographers could answer, even though I don't use Aprerture (or iPhoto).

I borrowed a friend's EOS-1D Mark II and shot using the camera raw format. My Mac could see the files and even open them in Preview. I am using PShop CS3 on a Mac running 10.5. Because of this, I have to use Adobe DNG converter so I could open them in Photoshop. I cannot afford to upgrade either the OS or Photoshop right now.

I decided to start shooting in the raw format with my EOS Rebel T2i. I formatted an SD card and changed the camera's settings to shoot RAW. When I moved the files to my Mac to open them, instead of thumbnail previews, I saw 'exec' icons, even though the file extension says .CR2. I tried to convert them with DNG Converter, and it said there were no recognizable files to convert. I changed the setting in the camera to save the file as both a RAW and jpeg file. The CR2 file was still not recognized, but the jpeg is.

I thought installing "RAW Camera Update 2.7" from Apple's website would solve the problem. (Currently, "RAW Camera Update 2.1.2" is in my Library.) The problem is that ver. 2.7 requires either Aperture or iPhoto 9, or my Mac won't install it. I don't think the issue is with the 3rd party software, because the Mac 'sees' the image files taken with the Mark II, but not the T2i.

I am stumped.

MacBook Pro 2.4 GB, Mac OS X (10.5.7)

Posted on Sep 15, 2010 8:27 AM

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8 replies

Sep 15, 2010 12:19 PM in response to mtpalms

I solved my problem through dumb luck, but maybe it will help other people who are still using CS3:

I had used the version of Adobe DNG Converter for the CR2 files from the Mark II: version 5.4 for CS3. On a whim, I decided to try downloading version 6.2 for CS5. It is a stand-alone app, and if it didn't work, I could just uninstall it. or it simply wouldn't install.

A funny thing happened:
I ran the installer successfully, but when I checked my applications folder, it said I still had version 5.4, and a search for version 6.2 only showed the dmg. Huh. So I dropped a CR2 file on the icon of the version I still had, and it converted! Yay!

The CR2 files still have the 'exec' icons, of course, but once the file is converted to dng, the thumbnails are there.

Canon said it was up to software developers to make things compatible, and apparently the only difference between the RAW file for the Mark II and the T2i, for instance, is a tag buried deep in the file that IDs the camera it came from. I could have used the software that came with the camera, but it converts the CR2 straight into a jpeg, and I want to open it and make adjustments with Photoshop's RAW/DNG editor before opening it in PShop proper, to preserve the most information I can. I am mentioning this only because Canon's suggestion was to use their camera's software, so that is an option, but imo, it defeats the purpose of using RAW to begin with.

Sep 15, 2010 2:33 PM in response to mtpalms

I do not use Aperture or iPhoto and the RAW Compatibility Update 3.2 requires the latest versions of this software,


I don't believe that's true. The article I linked to says:

Mac OS X Leopard provides system-level support for digital camera RAW formats from the following cameras.


I can't see anywhere on that page where Aperture or iPhoto are required.

Regards

TD

Mac does not recognize CR2 files from Canon T2i

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