Hi Barry
Quoting Barry Rice <bamr...@ucdavis.edu>:
Hey Folks,
Looooong time reader to this list, although I tend to be very sporadic. (By
the way, sorry if this is a duplicate posting, but I reposted in plain text
in case it was necessary.)
It is!
I had the 90mm f2.5 adaptall for many years, using it for much the
same purpose as you - wildflower photography. Eventually I decided I
wanted autofocus so I sold the adaptall lens and replaced it with the
Tamron AF 90 mm f/2.8 Di. I haven't regretted the decision even
though I haven't used it quite as much as I thought I would (so far).
It's a fine performer and I don't think you'd be disappointed if you
bought one. It can be used in both autofocus and manual modes and
it's not an adaptall lens.
I can't comment on the two Pentax lenses.
Cheers
Brian
++++++++++++++++++++++++++++++++++
Brian Walters
Western Sydney Australia
http://lyons-ryan.org/southernlight/
So, I do a lot of plant macro work for stock photography. I never use my
camera off-tripod. Also, with my K7 (my primary camera body), I always shoot
with locking the mirror up first, by either using the 2-sec lock up, or in
live view mode.
ANYWAY, my mid-length camera lens of choice has long been the 90 mm Tamron
F/2.8 manual focus. My wife is starting to use this a lot for butterflies,
but would like an autofocus lens of the same approximate length. By the way,
I?ve learned to hate the adaptall mount, as I?ve gone through a couple, even
though my lens is working great.
So, I see that there is a Tamron AF 90 mm f/2.8 Di SP A/M lens on Amazon and
the other usual markets, for about $438. There are also two Pentax f/2.8
100mm lenses, a WR FA smc for about $650, and a D FA for about $850.
For complete clarity, I?ll include Amazon links to the three lenses below.
So, to the Pentax gods and prophets here, I pose my questions.
1) I?m correct in thinking that all three lenses are autofocus, but can be
used in manual focus too, right?
2) The Tamron for Pentax does not need a damnable adaptall mount, does it?
3) What is the skinny on how these lenses all perform?
Your wisdom is most appreciated!!!!
Tamron 90:
http://www.amazon.com/dp/B0007YZLIK/ref=wl_it_dp_o_pC_S_ttl?_encoding=UTF8&c
olid=22I5NPVQK4MNX&coliid=I2Y6DA5UN15NTR&psc=1
Pentax 100 WR:
http://www.amazon.com/dp/B0030GGS3O/ref=wl_it_dp_o_pC_S_ttl?_encoding=UTF8&c
olid=22I5NPVQK4MNX&coliid=I29Z64M1ERC674
Pentax 100 D FA:
http://www.amazon.com/dp/B0002YE65Y/ref=wl_it_dp_o_pC_S_ttl?_encoding=UTF8&c
olid=22I5NPVQK4MNX&coliid=I1AP5RPZPWJ7QN
Cheers
Barry
Barry Rice, Ph.D.
Sarracenia.com
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