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Defective Oly 25mm lens

Started Mar 16, 2016 | Discussions thread
Paul De Bra
Paul De Bra Forum Pro • Posts: 12,949
That quality control does not exist.

Sadly but there exists no quality control procedure for this category of lenses that includes a test for decentering or "uneven sharpness". A lens will be subjected to a basic control to see that it "functions" but other than that there is only an occasional random sample that is tested to see whether the assembly like is still working properly or is out of whack.

And a vendor cannot do any quality control either as they don't want to touch an item they are selling as new (unopened).

So the reality is you play in a lottery when buying a lens. Even going through 5 bad copies can happen with almost every lens type from every manufacturer.

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Enjoying the Olympus OM-D E-M5.
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 Paul De Bra's gear list:Paul De Bra's gear list
Fujifilm FinePix F200EXR Olympus OM-D E-M5 Olympus E-M5 II Panasonic Lumix G 20mm F1.7 ASPH Olympus M.Zuiko Digital 45mm F1.8 +3 more
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