About OSS degrading image quality

Started Apr 29, 2013 | Questions thread
Bart Hickman
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Re: About OSS degrading image quality
In reply to KM Legacy, Apr 30, 2013

KM Legacy wrote:

Decentering of any element reduces IQ. You often see lens tests where they criticize a lens for being decentered (manufacturing error). If I understand OIS correctly, it works by deliberately decentering one or more elements.

I'm not sure that the element continues to float on a tripod, but I can imagine that it often never really returns to the centered position.

It's my understanding (from some Nikon white paper I think) that the moving element in a stabilized lens is actually a thin moveable prism designed specifically for that purpose.

I would've assumed that when you shut off OSS, that automatically locks it to the center "perfect" position.

Bart

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