The *ist D has an MTF Program Line as well.
-Adam
David Oswald wrote:
There is an additional difference between F and FA lenses in general.
FA lenses can communicate MTF data to the camera body which is used by
the PZ-1p, MZ-S, and *ist-DS (and maybe others). The *ist-DS uses
this info in AutoPic mode and any of the pictograph modes. It doesn't
use this data in P mode.
F lenses don't communicate this information.
Since not all bodies use the information, and the modes that I use the
most on the *ist-DS also don't use the info, it really probably
doesn't matter to most people whether you've got an FA or an F lens,
except for other possible differences not related to this particular
feature.
By the way; it's very hard to find any official information on this
subject from Pentax. I'm basically paraphrasing what one of Pentax's
reps told me a few years back, and with regards to how the feature
works on the *ist-DS, adding my own conjecture seasoned with comments
I've read here and in other forums.
DAve
Glen wrote:
I noticed that there are Pentax 70-200 f4-5.6 zoom lenses with both F
and FA suffixes. What is the difference? The F version is a LOT
cheaper on the used market. I think they are both autofocus, so I
suppose the difference might involve how the camera metering works
with the lens?
Does anyone have any comments on the quality of these two particular
Pentax 70-200 zoom lenses? If I were to get one, it would be for use
on an *istDS. I hear that some of the non-DA lenses don't do so well
on the DS camera, so I would want to avoid lenses that didn't get
along well with the DS.
Also, I'd love to find an on-line chart that described what all these
lens suffixes represented.
thanks,
Glen
