Originally posted by Aslyfox How, assuming, you aren't dealing with a local photo store but are buying on line from amazon or ebay or the two stores recommended by this site, how do you deal with the reported issue of "multiple duds" and the need to get a keeper
Is this a known problem which happens enough to really be a worry
How do you deal with the issue when trying to find a used lens that is a true keeper
Consider me worred and confused
I really believe this "dud" or "flawed copy" business is totally exagerrated and grossly blown out of proportion. It is the direct result of extreme over-analysis and pixel-peeping on an anal-retentive scale measurable to the nth degree. Some people could buy 6 or 7 coffee cups from Walmart and return them after identifying a de-centered handle, a flawed enamel coating or small speck of nothing lodged in the upper-right corner. This is utter nonsense unless there is indeed a major engineering or assembly failure on a unit, which is not as common as the scaremongers want you to believe.
This can and does happen of course but by NO MEANS when you buy a lens or a camera (including Pentax) do you have to worry and wonder about how many returns you'll make, how do you handle the reverse logistics or how much frustration and testing/analysis capacity do you have. This is pure over-analysis with a negative expected outcome mentality.
It represents, to my mind, a loss of the initial purpose of camera equipment which, for some of us, still means capturing moments in time with proper technique and storytelling ability. How many millenials are returning their smartphones because the camera has an infinitesimal and virtually undetectable anamoly affecting 0.005% of its ability to capture an image? Ahhh...very few I'd venture to affirm. How many of these people are making beautiful photography with their smartphone cameras? Legions and legions.
Statistically speaking, if I were to believe the "failure terrorists" on some forums, a large portion of the equipment I currently own must certainly be faulty, misaligned, de-centered, wobbly, ugly or otherwise worthy of a series of returns to the vendor. However, I DON'T SEE THAT notably because I'M NOT LOOKING for that nor do I secretly HOPE TO FIND that in my equipment. Furthermore, the images produced by my Pentax equipment are largely sufficient and satisfying not only for my self but for others as well including one (and only one) recurring professional customer.
Either I'm one lucky SOB or I do not let the self-fulfulling prophecy and expectation mentality of purchasing necessarily faulty equipment ruin my photographic pleasure.
Last observation, when, while looking at your pictures, did anyone remark "dude, you've got a major de-centering problem in your lens" ?
Happy shooting to all.