Originally posted by rvannatta I can say that I own or have owned at least a bucket full of Pentax glass dating back to when they were selling m42's. I own at least 4 of the 'big 5' SDM's, the 16-50, the 50-135, and the 60-260 as well as the 200 prime. I do not have the 300 prime for the reason that I own
BOTH the 300 A* primes--- the f/4 one and the f/2.8 model (which take the long converters which I have).
After using and owning multiple pentax lenses for over 40 years I have had exactly 1 lens
fail me.--- It was a Pentax-M 50mm lens which ceased to function properly after I dropped it while attached to a camera lens first on a concrete floor. The inferior designed helical thread broke out of the lens barrel and the lens came apart in 2 pieces and has never worked right since.
If the trolls that never saw a Pentax lens they didn't want to bad mouth want to send me some money, I'll mail the broken pieces of the lens I dropped so they will actually have some evidence that at least one Pentax lens in history broke.
I for one find these hot air threads tiresome.
I think you just called some of the Moderators as well as some of the regular posters including Ben Kanarek trolls because they have had SDM issues. If you research the DA* 16-50 you will find that it started life with other problems as well.
The bottom line is how big of a problem are the SDM failures mainly with the 16-50 and 50-135. They do exist though hand have been posted by PF regulars which is a sub-sample of all Pentax users. There could be more users of high end glass on this board than the general Pentax population but don't think so. There are a couple of other forums with some overlap.
The bottom line is that because I haven't had an sdm failure doesn't mean I am going to pretend they aren't a potential. Lastly, what you proved with your bucket of lenses is that mf lenses and screw drive af lenses are very reliable. I am pretty sure that the guys that get on here and praise the SDM and shout down those that have had problems kind of fade away in the event their SDM fails.