Originally posted by stevebrot Look again. While there is not aperture actuator, all photos I have seen of the lens mount shows the slot for the aperture simulator and by width, it appear to proper for wide-open @ f/1.4. As long as one is happy with shooting wide-open, it should work fine on the LX.
Steve
Right. When I referred to simulator, the lever is what I meant. Presumably it's nitpicking since a conventional K mount lens set to the maximum aperture wouldn't move the lever on the body's mount to indicate to the camera meter that the lens is set to stop down, noting that the actual f-number is irrelevant; the wide open position is the same for all lenses to enable the simulator to measure the exposure difference between the set aperture and maximum aperture.
So at the end of the day, the lens will work like any other fixed aperture lens like a mirror lens since nothing is telling the camera's meter that the lens aperture will be closed by any amount (and to compensate when metering), and the release of the aperture control lever when the shutter fires won't affect the lens.
Unlike mechanically linked DA lenses, the KAF4 lenses are wide open by default when not mounted.