When I import files into Lightroom they seem to be much smaller than the original file. This has only just started to happen. Not sure what is going wrong.
Any advice is gratefully received.
Please give more details. What version of Lightroom? What OS? How did you check the file size in and outside Lightroom? Lightroom is a database. It does not contain the physical images, only a link to them. That means that your claim is probably based on a misconception.
When you export an image, you export in another file format like jpeg. Jpeg is compressed, so it is smaller. You can also change the size when you export, which could make it even smaller.
You need to learn about how Lightroom works. You probably export in jpeg. During export you can set the file name. The lightroomqueen.com is a good start.
have you found an answer? mine just stared doing the same thing. I have searched everyplace and settings to try to get it bact to the way it was.