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Defective Oly 25mm lens

Started Mar 16, 2016 | Discussions thread
CrisPhoto
CrisPhoto Senior Member • Posts: 1,749
Re: That quality control does not exist.

Paul De Bra wrote:

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.

What makes me nervous is the impression that while the cameras and sensors get better and better, the average quality of the lenses is getting worse (if you don't count the PRO lenses).

I did not have any issue with the older lenses I have or had. Other people seemed to be happy too. For example there are not many issues with the Panasonic 20/1.7 lens besides the pathetic AF. They really sold many but this forum did not fill with complaints.

But I see a lot of complaints with Olys new PZ kit lenses and the 25/1.8.

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OM-D + Sam7.5, O25, O60, O75
O12-40, O40-150, P 14-140

 CrisPhoto's gear list:CrisPhoto's gear list
Olympus E-M1 II Samyang 7.5mm F3.5 Fisheye Olympus M.Zuiko Digital ED 75mm F1.8 Panasonic Lumix G Vario 14-140mm F3.5-5.6 O.I.S Panasonic Leica DG Summilux 15mm F1.7 ASPH +9 more
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