can open canon 6d camera raw file in cs5
I don't think that the 6D is supported in acr 6.7, which is the last acr update for cs5. There's a list of the cameras and raw formats supported by acr 6.7 in:
You can use the latest acr dng converter (acr 8.1) to convert 6D raw files to dng format, then open the dng files in cs5.
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