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MFT speedbooster question (Anyone used it with the Sigma 30 F1.4 DC HSM?)

Started Jun 7, 2015 | Questions thread
Eric Nepean
Eric Nepean Veteran Member • Posts: 6,209
Re: MFT speedbooster question (Anyone used it with the Sigma 30 F1.4 DC HSM?)
1

I tried the FD to MFT Metabones Speedbooster with the FD 28mm F2.8 lens, and mentioned in the forum that I go pretty poor results. Brian Caldwell, the optical designer behind the MEtabones, responded with the comment that since the FD lens wasn't very good on its won, it wasn't going to do much better with the speedbooster.

The same likely applies to your Sigma.

BTW I get excellent results with the Metabones speedbooster and the following Canon FD lenses: 50mmF1.4, 85mmF1.8, 100mmF2.8, 135mm F2.5, 200mm F2.8, 400mm F4.5.

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Eric
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