PIX 2015

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 ▾
David Kieltyka
Veteran MemberPosts: 4,568Gear list
Like?
Re: MFT 25mm f/1.4 fails to blur background like Full Frame 50mm lens @ f/2.8
In reply to Steen Bay, Feb 16, 2014

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-

 David Kieltyka's gear list:David Kieltyka's gear list
Leica M8.2 Pentax 645D Olympus OM-D E-M5 Panasonic Lumix DMC-GX7 Olympus E-M1 +7 more
Reply   Reply with quote   Complain
Post (hide subjects)Posted by
(unknown member)
wowNew
(unknown member)
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow