Igor Roshchin wrote:
Hi All,
I suspect this question had been discussed before,
but I was not able to find direct comparison of these lenses,
<snip>
Pentax SMC (AF):
FA 100/2.8
D FA 100/2.8
FA 135/2.8
F 135/2.8
FA 100mm f/2.8 Macro: Once called the best (or was it sharpest?) 100mm
macro on the market.
D-FA 100mm f/2.8 Macro: Optimized for digital. Presumably less
suceptible to purple fringing and the like than the FA version, though
I've heard very few complaints about the FA.
FA 135mm f/2.8: A great lens. I've got one. Its focusing ring is a
little more sloppy than 'A' version, but its optics are very good and
it's a sharp lens. There has been some discussion of purple fringing.
The only time I ever saw it was when I photographed a squirrel atop a
telephone pole with a bright sky background. The telephone wires
'fringed' a little, but that was a pretty extreme test of high contrast.
This lens has a built-in hood.
F 135mm f/2.8: The discussion I've seen is that the focusing ring is a
little better dampened, but the internal mechanism isn't as strong as
with the FA. I don't know if this is true or not. From what I
understand the optics are identical.
Any comments on comparative optical (and otherwise) quality of them?
Any difference in AF speed and accuracy?
Do D-FA and FA 100 have the front element rotating?
Does anybody know what type of issues (if any) of FA 100/2.8 with *istD(s)
What would be reasonable prices that one can find for any of these lenses
used, in good condition?
Thank you,
Igor
