M42 lenses are have to be stopped down to taking aperture via a manual switch on the lens. If the lens does not have one, you have to jam the pin so that they stop down. A drop of crazy glue or peening the stop down pin will permanently fix it in stop down mode.
But the Zeni 16/2.8 is a fisheye. If you want a rectilinear 12mm lens, the Pentax DA12-24mm f/4 lens is the only game in town. If you can make do with a 14mm lens, the Pentax DA14/2.8 is a superb pick. I have, and love, the latter. I also have the Zeni 16 myself, in K mount, and use it occasionally, but FE is for occasional use, not for everything. Godfrey On Jan 9, 2007, at 9:27 PM, Beaker wrote: > I have a new K100D, and am looking for a fast, wide (roughly 12mm) > lens. > Any suggestions? > > I've been thinking about the 16mm Zenitar fisheye lens. From what I > have seen, it comes in several versions. As a Pentax K mount, with > the aperature lever, and an M42 screw mount, amoung others. Both > versions have advantages- the K mount would be more convenient, the > M42 mount would be more versitile- It (and an adapter) would work on > my Canon 10D. > > How does the aperature selection work in the M42/adapter? Judging by > the pictures I've seen, it has the stop down pin on the mount, but > no auto/manual apature selector on the side. I have a Yashica lens > set up this way, and I can only use the lens wide open- no way to > depress the pin, so the iris will stop down. > > Assuming you can get the M42/adapter version to stop down for > exposure, are there any other quirks that might influence me one way > or the other? -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
