I don't have this camera, so I can't repeat your test, but I wanted to ask what program you are using to view this EXIF info? Lens model info isn't saved as a text string like "Canon EF-M 22mm f/2 STM".
Edit: somehow the end of my comment was cut off. What I meant to say was that the Lens ID represents the lens model and it's the job of the program reading the Lens ID to lookup what lens name it maps to.
« Last Edit: July 22, 2013, 09:09:58 AM by bchernicoff »
6D, Fuji X-T1, X-E1
Tamron 24-70 2.8 VC, 70-200 f/2.8L IS II, 400mm f/2.8L II, 100mm L IS Macro, Sigma 85mm, & 35mm f/1.4's, Rokinon 14mm f/2.8,
Fuji 23mm 1.4, 35mm 1.4, 56mm 1.2, 14mm 2.8, 18-55, 55-200