Firing via the PC sync socket which is more tolerant to higher voltages, but possibly 400-600v!!! is a whole other subject and I would reccommend against it with the CT1 without further investigation. Adobe DNG Converter 10.2 is a reliable application for converting camera RAW. The above is assuming use in the hotshoe. Download Adobe DNG Converter 10.2 for Mac free standalone latest offline setup.
Adobe Customer Support (Case Number 0222001570) provided a download link for this converter, which, unfortunately, did not install.
The information re: the CL1 claims 6-8 volts and should be okay. I am working on a MAC computer (OSX 10.9.5) When working in Lightroom (5.7.1) and want to do some photo editing in Photoshop (CS5 12.0) I get a pop up that says I need a Adobe Camera Raw and DNG Converter 8.7.1. The newer line of DSLRs (your 5Dmk3 for instance) are rated to a max of 250volts. Photo & Graphics tools downloads - Fraps by Beepa Pty Ltd and many more. Subscribe to: LRTimelapse Newsletter, Instagram, Youtube Channel, Facebook, Twitter.
Canons official line re: trigger voltages is (or used to be) 6volts max but that was for early series DSLRs (300d/350d). C:\Program Files\Adobe\Adobe DNG Converter\Adobe DNG Converter.exe Please note that LRT 5 will automatically make this change, but on LRT4 you need to do it manually. The trigger voltage as I read it is around 400volts and if the serial number is below 534000 it can ve as high as 600V.
