There's no problem opening and working with the CR3 raw files. It's just not getting thumbnails when loading the files from, the sim card - just the date and file number but no thumbnail. This makes sorting which photos go into which folder more difficult. Not impossible but annoying. CR2 files work fine in this regard. I'm using a SanDisk extreme 32mb card in my EOS R camera and have all the latest Camewra Raw and Photoshop updates.
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