I currently have Lightroom 4 and I have just updated my camera to Sony Alpha 77 mark 2. Now Lightroom wont open or view any raw files. Any suggestions what I can do to fix this?
It appears that that camera was added in Lightroom 5.5. That means there will be support for that camera from version 5.5 onward, but there will be no support for the camera in previous versions. You can upgrade to Lightroom 5 and have that support. Or you can use the DNG converter to create DNG copies of your raw images that you can use in the Lightroom that you have now. Here is the published list of cameras supported by Lightroom and Camera Raw:
Thank you for that Jim. I will try and use the DNG converter again, although I thought that that was I had tried yesterday. Will look again, it was late last night!