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

Started 8 months ago | Discussions thread
David Kieltyka
Veteran MemberPosts: 4,396Gear list
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Re: Have a look here...
In reply to Tom Caldwell, 8 months ago

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.

-Dave-

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