I own Lightroom 5.7.1, latest 5.x, and want to read and edit new Sony camera raw A7RII.
Is this possible? It does not recognize it.
I don't want to go thru intermediate conversion to DNG unless you can tell me there is no data loss using that method.
(Usually conversions results in data loss, at least in other media.)
It is not possible to view the images from Sony A7RII in LR 5.7.1 as it does not have the latest version of Camera Raw,
However Lightroom 6 has the latest version of Camera Raw 9.1.1 which supports the RAW files from Sony A7RII.
Please check this article for the Camera Raw Supported Cameras : https://helpx.adobe.com/photoshop/kb/camera-raw-plug-supported-cameras.html
Please let us know if it helps.
There are both lossy and lossless conversions available in the DNG converter. You can choose the lossless conversion.