Originally posted by LFLee resolved many years ago? well, in that case they agreed there is an issue, and not offering recall or something?
no, there was never a official statement that say sdm is an issue and that they fix it.
I am a Pentax fan, but will point out when they made mistake and sdm issue is one. I thought sdm is a non-issue until my own len's sdm fail.
This has no relevance here. If this really is a Tamron design, most likely it also has some kind of Tamron motor, and Tamron motors
do have an
excellent reputation! Le's stop fussing about the past. The past is, by definition, past. I am not going to demand that Pentax bow down before me and admit that the screw drive (which caused me to go from Pentax to Canon twenty years ago) was a mistake. I'm just glad to see that Pentax is finally making lenses competitive with what Canikon provides. You should also be glad about progress, instead of complaining about the past.
added: what year did your Pentax SDM fail??