I resisted this lens for a long time because my vintage Leitz macros have been so nice to work with. On the other hand, I do more product shooting for the ETSY store than all other types of shooting combined. It's the only photo work that currently brings me in any money. So, I suppose I ought to go ahead and see what the modern dedicated lens can do for my shooting (and hopefully processing) flow. I do have reservations about a few things, like the way the camera plus lens will handle on the tripod. Also, the way it will (or won't) render sun stars. Hopefully the benefits of AF, stabilization, EXIF data, internal focusing and the modern optics will be dramatic and the few anticipated drawbacks will prove trivial. I'll be reporting back soon. Last hurrah for the Leitz Macro-Elmar 100mm?