Get the Sony RX100 IV! There is a free program for the Mac called, CaptureOne, by Phase One that imports the new Mark IV RAW images even on older Mac OS operating systems. Yeah!
For $50 you can get the Pro version for Sony import. I was able to import the RX100 IV raw images then edit those images directly within CS6 (for those that avoid the ridiculous cloud/iCloud mentality) or export to Aperture via TIFF or PSD in 16bit.
Sadly, Apple is dropping it's support for professionals in many fields so this is the best solution that I know of as of July 2015. Who knows, maybe Capture One will replace Aperture and even support plugins like NIK software in the future. That way, we are not forced to use Apple's hokey, iCloud-tethered, 4th grade programs like Apple Photos when we have become accustomed to superior products like Aperture that are only discontinued for lack of social media tricks or not promoting cell phone sales. I think Apple was actually a computer company at one time; the time when professionals kept them going. hmmm.
