I tried to convert them with DNG Converter, and it said there were no recognizable files to convert. 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. I formatted an SD card and changed the camera's settings to shoot RAW. I decided to start shooting in the raw format with my EOS Rebel T2i. I cannot afford to upgrade either the OS or Photoshop right now. Because of this, I have to use Adobe DNG converter so I could open them in Photoshop. I am using PShop CS3 on a Mac running 10.5. My Mac could see the files and even open them in Preview. I borrowed a friend's EOS-1D Mark II and shot using the camera raw format. The CR2 takes over from Canon's previous format - CRW and is used by the Canon 350D, 1D, G9 and 20D models.Īdobe Photoshop, Adobe Photoshop Lightroom, Paint Shop Pro, Picasa, digiKamĪdobe Photoshop, Paint Shop Pro, the GIMP, ImageMagick, IrfanView, Pixel image editor, Paint.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). RAW files are the best quality to size ratio that a photograph can be stored in, primarily because each colour is recorded in either 12 or 14 bits and a lossless compression is used. JPEG typically achieves 10:1 compression with little perceptible loss in image quality.

The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality. JPEG is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography.

You can choose to store your pictures in RAW format which gives you the benefit of being able to do a lot of post processing on the file, if you tried to do this with JPEG, this would be difficult and would likely result in a quality loss. This does not contain a ready to view picture like a JPG or PNG file, it is used to store information directly coming from the sensor. The Canon RAW version 2 (cr2) format is a RAW format created by Canon for storing digital images.

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