iPhoto does not recognise the photos on the SD card of my new camera.
According to Apple's RAW format support page, Sony Alpha ILCE-6000 support was added in Digital Camera RAW Compatibility Update 5.06 released in August 2014.  This update requires a minimum of OS X Mountain Lion 10.8.5 with iPhoto version 9.4.3 or later.  

I recommend upgrading to the latest OS X version supported by your Mac.