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"in spec" lenses
Very informative article from Roger Cicala about "in spec" lenses:


I loved the part about the chief of optical testing! 

In my Pentax days, I remember having sent a Pentax DA* 16-50 back and it came back exactly the same, nothing had changed.

It's a shame manufacturers don't take it a bit more seriously. The lack of good QC in the first place doesn't help either.

It looks the new Sigma direction is trying to change a little all of this. Let's hope others will follow.


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Hey Klaus,


I see my thread was posted twice for some reason (??!).

Can you please delete this instance?



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