You can find discussions culled from the PDML of most Pentax Lenses here:
http://stans-photography.info/
not that we don't like answering questions but it may save you some time.
Igor Roshchin wrote:
Thanks to everybody who responded to my question.
I am still open to further comments,
but I particularly interested to hear people's opinion about:
What would be reasonable prices that one can find for any of these lenses
used, in good condition?
Also, can anybody comment on
A 135/2.8 lens compared to F and/or FA 135/2.8 ?
Thank you,
Igor
--
When you're worried or in doubt,
Run in circles, (scream and shout).