Originally posted by Tjompen1968 FA is the full frame lenses made for the old "analogue" cameras.
Although made for film cameras, some Pentax
FA lenses are still in production. There are also plenty available on the second-hand market.
D FA describes three full frame macro lenses (35, 50 and 100mm) which are all renowned for their sharpness (but not focusing speed). Each can take 1:1 macro photos. The D FA 35mm macro is the current model of the 35 macro that Ron and Sandy suggested.
The
DA series of Pentax lenses are those designed for Pentax's APS-C digital cameras (such as the K-x and K-3).
---------- Post added 08-22-14 at 09:40 AM ----------
Originally posted by Sandy Hancock To free up funds, it might be worth considering which of the two long zooms suits your needs best. So much redundancy in zoom range seems a little pointless to me.
+1
I haven't owned the 50-200 but from what I have read and seen the 55-300 is faster and much better at the long end (say 90mm and above) and the extra reach is invaluable for animals. Its weakness in my opinion is at the wide end. If you went for a zoom or prime(s) that covered up to about 70mm or so, it would take care of that issue. The 55-300 has a long 1.4m minimum focusing distance, which might be a limitation for pet photography, but a close focus filter or diopter (e.g. Raynox 150) would fix that at modest cost. (There are plenty of threads about this.)