Just a quick note. I met up with Juan Buhler on Sunday and had a chance to briefly play with his istD. We attached my K18/3.5 to the camera and I got a chance to try the green button routine. Literally, it's a snap to use. After just a couple of tries I can see how it would become intuitive. So, for those considering the istD don't be concerned about the green button technique with K and M lenses.
The K18/3.5 is a very sweet lens on this camera. While some may want a wider AOV, or prefer zooms, the 18mm is pretty nice for lots of outdoor shooting, and, more so than many other wide lenses (I'm specifically thinking of the 15/3.5 here) it's small and light. It's faster, I believe, than the 16~45 that some here are considering, and probably optically superior as well. If you can find one, give it a test. You may like it. Shel

