I hadn't noticed this before, but in the Metadata Browser I noticed that the same lens is reported differently on my Canon 20D versus the Canon 40D.
On the 20D the lens is "17.0-85.0 mm" and my 40D says it is the "EF-S17-85mm f/4-5.6 IS USM".
Two things..
- This highlights a feature request for Lightroom. It would be great to click on multiple items in the lens browser and say "these are the same".
- In addition, I would love to give lenses my own name, and then map different 'lens signatures' to that name.