Review of HD21mm ltd at photozine

Started Nov 1, 2013 | Discussions thread
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KL Matt Veteran Member • Posts: 5,747
Re: Review of HD21mm ltd at photozine

The other thing i noticed on the test is that the center wide open is reported not to be as sharp as the corners at optimal apertures... Hmmmm, I don't think so.

With that much field curvature, if your lens is back focusing, that could indeed be the case on images of flat objects I'd assume.

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