One thing that kept demand for manual focus lenses high (Nikon for sure, and to some extent Canon FD) was the release in the last few years of a lot of adapters for such lenses to be used on video cameras. Such cameras, with their tiny sensors, have nearly infinite depth of field with almost all focal lengths, so these adapters (sometimes generically referred to "DOF Adapters") allowed videographers to have the kinds of perspectives and shallow depths of field previously only known to 35mm movie cameras and still photographers. I wonder if, with the release of Digital SLRs that can take movies, the demand for these adapters, and thus for older manual focus lenses, will slack off a bit again?