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

Started Feb 16, 2014 | Discussions thread
Shop cameras & lenses ▾
Steen Bay Veteran Member • Posts: 6,974
Re: MFT 25mm f/1.4 fails to blur background like Full Frame 50mm lens @ f/2.8

David Kieltyka wrote:

Steen Bay wrote:

According to DxO the t-stop of the 25/1.4 on E-M1 is 1.7, but not quite clear whether that affects the DoF too.

It doesn't. DOF is affected by the actual aperture diaphragm diameter rather than the light transmission characteristics of the lens. I've observed this many times in actual use with fast lenses.

-Dave-

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

Post (hide subjects) Posted by
(unknown member)
(unknown member)
BJN
(unknown member)
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow