Adobe has posted preview versions of the next releases of the Camera Raw plug-in for Photoshop CS4, Photoshop Lightroom and DNG Converter. Camera Raw 5.7, Lightroom 2.7 and DNG Converter 5.7 release candidates for Mac and Windows add conversion support for RAW files captured with the Canon EOS Rebel T2i/550D and seven other digital cameras and backs.

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