Last Saturday was the first time I tried to use the particular equipment combination of *ist-D + 1.7x AF Adapter + A* 300/2.8
I was more than a little irritated to find that with this setup I seemed to be restricted to just the central auto-focus sensor. For the sort of shots I want this combination for (mostly head- on car shots, often with the car coming into view over a crest) I want to focus below center of frame. Pre-focussing is one approach, but the limited depth of field with that setup with the lens wide open means the plane of focus is often not where I want it to be. So I tried auto-focus, but for one reason or another I ended up with almost no usable shots from the day. (It's not the AF system, either; I went back to the same spot on Sunday using the FA* 250-600 and a below-center AF sensor, and ended up with a significant number of satisfactory shots). I'm hard-pressed to think of a reason why the camera can't use the whole range of AF sensors. For that matter, I can't recall ever being aware of this problem with the MZ-S, and I'm pretty certain I'll have used that body with the 300 & AF adapter.
