Then scroll through the items in the left side of the dialog box, you'll see:
Voila! There you go. Have fun. One thing you'll notice is that since I coded my Zeiss 50mm C-Sonnar as a Summilux, the EXIF data is reporting the wrong lens name. I think I just need to correct the lens information in the EXIF, but haven't had time to figure out the easiest to do that yet.