I have been wanting a 28mm for my Df .... just because. I looked at the new 1.8G, but it is large, and the cheapest nice used one I could find was $500. New is nearly $700. So I looked at the legendary Ai-s 28mm f2.8. New USA is about $540, but there are lots of used ones out there. It's small, and all reviews say it is as good as it gets for near distance. Bjorn Rorslett gives it a 5 on almost everything but only 3.5 for distance. No one seems to like it at distance. Then there is the Ai-s 28mm f2. It is good everywhere, although not as good up close as the f2.8 version. Still, Bjorn gives it top grades on everything. The new 1.8G is an excellent lens, as are both of the Ai-s lenses. AF is not a very important feature here. I want to use it for street-type stuff, and MF is fine. This morning I got on ebaby and found the Ai-s f2 version out in California. The seller has perfect feedback on a lot of sales, and he declares it is in Mint condition. The photos suggest it is. t was a bit over $300, and that looked pretty good to me. So I jumped on it. I truly hope that the fact it has been in California doesn't taint the lens in some way. I am looking forward to this 28mm lens. I have enjoyed my 20mm Ai-s more than I can tell you, and I think this lens will be great fun as well on my Df. I recently picked up a 55mm f2.8 that is mint and beautiful. Wow, is that thing sharp. I tried it also on my little a6000, and it is wonderful on that as well. The Df has made all this possible for me. I take fewer photos with a larger variety of lenses than I ever have before, even with film, and I enjoy it immensely. I have started my little savings account for the Df2, if it ever comes. But even if I do get it, I'm not sure I could give up my Df. That's why I want to have the money saved and ready, rather than plan on selling my Df for the funds. A Df2 would have to be really special to replace the Df.