How can Apple NOT update compatibility for the Nikon D4S??
Man, this is such a let down. I'm working with this camera every day and it's such a pain to have to either convert to DNG or shoot JPEG. C'mon Apple...
Aperture 3, OS X Mavericks (10.9.2)
You should let them know here:
http://www.apple.com/feedback/
I did that for my Canon and 2 months later, there was an update for RAW support.
FWIW, the D4 is on the list (and so is a D3s, so it should definitely help to submit feedback)