MFT 25mm f/1.4 fails to blur background like Full Frame 50mm lens @ f/2.8

Started Feb 16, 2014 | Discussions thread
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David Kieltyka
David Kieltyka Veteran Member • Posts: 4,682
Re: MFT 25mm f/1.4 fails to blur background like Full Frame 50mm lens @ f/2.8

Steen Bay wrote:

But what if the pixels can't 'see' the outer parts of a large aperture (because of 'pixel vignetting')?

If that has any impact at all it's minor compared to the impact of a larger absolute aperture. I've seen this with the fast Voigtländers, where stopping down from f/0.95 to f/1.4 has a small impact on shutter speed but a very noticeable impact on DOF.

-Dave-

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