Christian mused: > > > > John Francis wrote on 12/3/2004, 1:07 PM: > > > Thibs mused: > > > > > > I thought P-TTL worked with A lenses.. > > > > Not according to the charts in the appendices to the manuals > > (p144 in the *ist-D manual, p177 in the *ist-DS manual). > > > > Apparently Pentax can't make up their mind, though: in the > > charts in the main body of the manual (p93/p153) you can use > > P-TTL with A lenses > > > > Hey, *ist-DS owners - here's something for you to test :-) > > > > > > P-TTL with "A" lenses in the "A" position
OK - we'll take that as confirmed. Thanks, Christian & Thibouille But I've just re-checked how AF works with my A lenses, and I'm definitely only getting the central sensor. I can't change the autofocus sensor selected while an A lens is mounted, either. This also prompted me to go back and check the behaviour of my MZ-S. It appears to behave the same way as the *ist-D; with my A200 lens mounted I'm only getting the central AF sensor, even with a different sensor selected (although, unlike the *ist-D, I can change the sensor selection even with an A lens mounted). I guess it's not all that important, if I've only just discovered that (despite having had the MZ-S since they were first released). But I guess it explains a few of my out-of-focus shots using the A300 (strictly speaking, focussed on the wrong part of the image). I still don't understand why this limitation is necessary, though.
