I had the SMC-P version of this lens on my K10D when it decided it would rather bounce off the concrete floor than stay in my hand. I replaced it with the Tamron version (got a good price on it, and couldn't find the SMC-P variant anywhere). But I am finding (based on my first few test shots) that the Tamron version is much, much less sharp than the Pentax. They appear identical, and claimed by many to be the same lens optically.
----- Pentax rebranded a 28-105 from Tamron. It was reportedly inferior to the (then current) FA Power Zoom 28-105 F4-5.6. That one was a lovely zoom lens. If you can find a used one of those, I would get it. But they seem to have gotten rarer in the used market. OTOH, I believe it is still available new, but currently backordered. Try here: http://www.bhphotovideo.com/c/product/40725-USA/Pentax_27667_Zoom_Wide_Angle_SMCP_FA.html Otherwise, the current FA 28-105 (F3.2 to something) is (I believe) still available (but also backordered). Many people like it, although it is not as good as the FA 24-90. But it is certainly a bargain, and probably superior to both the older Tamron and the Pentax version of the Tamron. Joe -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
