I have Lightroom version 3.6. I just took some raw file photographs of an item in preparation for selling online. Lightroom will not allow me to open this. Can anyone give me some assistance?
What camera took the image?
Nikon D 3300
That camera was not added until Lightroom 5.4. You can download the DNG converter, latest version is 8.7.1, and use it to create DNG copies that you can open with Lightroom 3.6.