My apologies, thedigitaldog is correct. ACR is the Photoshop Camera Raw plugin. I believe both the camera raw plugin and LrC do a DNG file hash validation when opened in the Develop module. A search on the Web seems to indicate that Leica does not include hash check data in its DNG file format, at least for some models. For DNG files that don'e have hash check data conversion to Adobe DNG file format would most likely not detect data errors, so of no help. I suggest contacting Leica Tech Support or Forum and ask if the Leica Q2 DNG files contain hash check data and what they recommend for cheking it.