Have you tried to reinstall the RAW Support? Sometimes the new cameras in theRAW support are not registered in the launch services. Reinstalling can correct this.
I scanned the installed RAW support for all Sony cameras, that are listed in the plugins and got this list:
Sony Alpha DSLR-A100U4.0.0
Sony Alpha DSLR-A900U4.0.0
Sony Alpha DSLR-A700U4.0.0
Sony Alpha DSLR-A200U4.0.0
Sony Alpha DSLR-A350U4.0.0
Sony Alpha DSLR-A300U4.0.0
Sony Alpha DSLR-A900U4.0.0
Sony Alpha DSLR-A380_
Sony Alpha DSLR-A390U4.0.0
Sony Alpha DSLR-A330U4.0.0
Sony Alpha DSLR-A230U4.0.0
Sony Alpha DSLR-A290U4.0.0
Sony Alpha DSLR-A850U4.0.0
Sony Alpha DSLR-A850U4.0.0
Sony Alpha DSLR-A550U4.0.0
Sony Alpha DSLR-A500U4.0.0
Sony Alpha DSLR-A450U4.0.0
Sony Alpha NEX-5U4.0.0
Sony Alpha NEX-3U4.0.0
Sony Alpha SLT-A33U4.0.0
Sony Alpha SLT-A55U4.0.0
Sony Alpha DSLR-A560U4.0.0
Sony Alpha DSLR-A580U4.0.0
Sony Alpha NEX-C3U4.0.0
Sony Alpha SLT-A35U4.0.0
Sony Alpha SLT-A65U4.0.0
Sony Alpha SLT-A77U4.0.0
Sony Alpha NEX-5NU4.0.0
Sony Alpha NEX-7U4.0.0
Sony Alpha SLT-A37U4.0.0
Sony Alpha SLT-A57U4.0.0
Sony Alpha NEX-F3U4.1.0
Sony Alpha SLT-A99U4.2.0
Sony Alpha NEX-6U4.2.0
Sony Alpha NEX-5RU4.2.0
Sony Alpha A3000U5.1.0
Sony Alpha SLT-A58U4.7.0
Sony Alpha NEX-3NU4.6.0
minRawCameraVersion\Sony Alpha 7U5.1.0
Sony Alpha NEX-5TU5.1.0
minRawCameraVersion]Sony Alpha 7RU5.1.0
minRawCameraVersion]Sony Alpha 7SU5.6.0
Sony Alpha SLT-A77 IIU5.6.0
Sony Alpha 7 IIU6.3.0
Sony Alpha 7R IIU5.1.0
The last item might be the support for your camera, so it is installed, and probably only needs indexing. To register the RAW types manually, if reinstalling does not suffice, open a Terminal and copy and paste this line: (all goes on one line, and there are only two space around the "-R". If the forum software inserts extra spaces into the word "Launchservices" remove them.)
/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchSe rvices.framework/Versions/A/Support/lsregister -R /System/Library/CoreServices/CoreTypes.bundle/Contents/Library.
Then hit the return key.
This fix has originally been posted by Alan Roseman: Re: Aperture 3 preview of raw file greenish