I don't have any direct experience with any of those lenses, but from
what's been discussed the 50-200 is the only one really worth
considering, if you don't need full coverage.
Glen wrote:
Hi,
I was hoping that someone on the list could help me figure out which
of these Pentax zoom lenses performed the best. I would be using these
on the *istDS, so the crop factor might possibly be something to
consider. I think I also read somewhere that the digital bodies
especially need a lens with higher resolution, because of their
smaller image size. Also, if one of the lenses has been reported to be
slightly soft in the corners on 35mm film, that might still be okay.
With the digital body's smaller image size, those "corners" no longer
exist -- if you know what I mean. ;-)
Here is the group I'm tentatively considering:
SMCP-DA 50-200mm f/4-5.6 ED
SMCP-FA J 75-300mm f/4.5-5.8 AL
SMCP-FA 100-300mm f/4.7-5.8
I realize that the first lens is the only one of the three designed
expressly for the digital bodies. I also realize that it's the only
one with internal focusing, and the only one which won't rotate my
polarizer during focusing.
However, which one should provide the best image quality?
If there is anything else I should know, feel free to mention it, but
image quality when used on an *istDS is my main concern for now.
thanks,
Glen
--
When you're worried or in doubt,
Run in circles, (scream and shout).
