Lens quality control

Started Sep 24, 2013 | Discussions thread
Senior MemberPosts: 2,201Gear list
Re: Lens quality control
In reply to Cheezr, Sep 26, 2013

Cheezr wrote:

My track record with Sony is not too good. 35 1.8 had odd focus problems and I returned it and now new 16-70 has had some hiccups (will give it a few days but if past experience is any guide it will have to go back). When Sony charges that kind of money for lenses, they should try them out before shipping.

As to your real question, ultimately refractive errors will be corrected in software to reduce the costs of the lenses.

Sadly, this cost savings will not be passed on to the end user. This is already the norm in micro four thirds, where software correction is part of the design. To me they are expensive, optically poor lenses. I posted this at the micro four thirds forum and they piled on of course, but I would not be unhappy if these were tiny $300 lenses, but they are $500 and up, and some are not even that small.

Uncorrected distortion numbers compared to some lenses from Canon and Zeiss/Voigtlander:

Olympus 75mm 1.8 0.44% $899
Voigtlander 75mm 1.8 0.27% $699
Canon EF 85mm 1.8 0.14% $369

Olympus 45mm 1.8 1.02% $349
Canon 50mm 1.8 0.37% $110
Zeiss 50mm 2.0 ZM 0.17% $859
Voigtlander 50mm 1.5 0.08% $899

Panasonic 25mm 1.4 2.73% $569
Canon EF 24mm 2.8 1.32% $699
Voigtlander 25mm 0.95 1.07% $999

Panasonic 20mm 1.7 3.26% $399
Canon EF 20mm 2.8 1.89% $489
Zeiss 21mm 2.8 ZF 1.70% $1843

Olympus 17mm 1.8 4.54% $499
Voigtlander 17mm 0.95 1.77% $1149
Zeiss 18mm f3.5 ZE 1.77% $1395

Olympus 12mm 2.0 5.45% $799
Voigtlander 12mm 5.6 1.84% $799

Panasonic 12-35mm 2.8 $1119.00
12mm: 5.78%
20mm: 1.00%
35mm: 0.70%

 walkaround's gear list:walkaround's gear list
Sony Cyber-shot DSC-RX100 III Canon EOS 70D
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