Are there any serious users of MF lenses on this forum?

Started Feb 4, 2014 | Discussions thread
David Kieltyka
David Kieltyka Veteran Member • Posts: 4,881
Re: Have a look here...

Tom Caldwell wrote:

Thanks Dave, I did check the links - another focal reducer fan it seems. Just as a query - the focal reducer adjusts the magnification factor but when you combine this with the regular crop factor for M4/3 the combined result is 1.4x the nominal lens focal length and therefore the effective (as opposed mechanically true) of a (say) 50mm f2.0 is as a 70mm f1.4.

Yep, that's about right. The SpeedBooster turns an m43 camera into an APS-C camera in terms of diagonal field-of-view with a given focal length. (Actually you get slightly wider coverage with the m43 + SB combo.) I got my SB mainly for video use with a Blackmagic Pocket CineCam. The sensor in the BMPCC is even smaller than m43 so every little bit of extra coverage helps.


 David Kieltyka's gear list:David Kieltyka's gear list
Leica M9-P Leica M8.2 Sony Alpha a7R II Panasonic Lumix DMC-GX8 Leica M10 +6 more
Post (hide subjects) Posted by
(unknown member)
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow