I had to send my first DA* 16-50 back, but the replacement has been so good, it made me forget. I've shot over 10,000 frames with it for virtual tours, and every frame has been right on. My 50-135 has been great from the start. I hadn't heard of any focus problems. But the DP folks whine about everything so I wouldn't put much stock in it.

I would guess that the long delay on the 60-250 had something to do with resolving quality control problems that arose with the DA*16-50. I'm not concerned about the quality, only the price. I know that if I buy from B&H, and it's defective, they'll replace it.

I looked at the Sigma 70-200/2.8. It's gotten some good reviews, and it's available for about $600. But it's not as long, and Sigma quality has always been a bit suspect. I'm leaning toward the 60-250.
Paul

On May 9, 2009, at 4:52 PM, Mark Erickson wrote:

JC OConnell wrote:

http://forums.dpreview.com/forums/read.asp? forum=1036&message=20382864

Maybe thats a better lens for possibly the same or less money? I dont
know but it would be worth investigating, no?

I had one--bought it from a member of this list (or its predecessor) for ~$1100 around 2000. Nice glass, but really big and really heavy. I sold it for $2000 on eBay in 2006 and bought my 31, 43, and 77 limited lenses with
the $$$.  I use them far more than I ever used my FA* 80-200 F2.8.

I also had an FA* 28-70 F2.8 lens. It worked ok, but didn't seem all that durably built. Some other folks on this list had terrible troubles with
theirs.  I sold it for what I paid for it, so no net loss there.

What keeps me from buying the 60-250 (besides the $$$) at this point is my lack of trust in the Pentax DA* lenses. I have no interest whatsoever in dropping more than $1000 for something that may or may not have a fatal design/manufacturing flaw. I have a 16-50. It went back to Pentax USA twice because of quality control problems. The second time they replaced it
with a different copy.  It seems ok, but I've lost some confidence.

I decided to stay away from the 50-135 due to the rash of SDM failure
reports at a couple of different forums.   Pentax is going to have to
convince me that they can reliably manufacture durable lenses before I buy another one. Maybe a year from now, if the 60-250's out "in the wild" are
still working, I'll consider one.

--Mark


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