compatibility with SIGMA 120-300mm f2.8

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  • Posts: 1
  • Joined: Thu Mar 08, 2018 11:16 am
  • Real Name: Etienne Houver

compatibility with SIGMA 120-300mm f2.8

PostThu Mar 08, 2018 11:27 am

Hi everyone,

I would like to know if someone try/test the Sigma EX – 120-300 mm - f/2.8 APO DG OS HSM with an adaptator like ring métabone MB_SPEF-BMCC-BT1 with the studio camera? does it work well?


Denny Smith

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  • Joined: Thu Aug 01, 2013 4:19 pm
  • Location: USA, Northern Calif.

Re: compatibility with SIGMA 120-300mm f2.8

PostThu Mar 08, 2018 5:14 pm

While the BMCC Speed Booster will work, it was designed for the BM Cinema Camera dumb MFT mount which requires an external 5VDC USB power connection. It also only offers a 0.64 focal expansion.
You really want to tomuse the EF to BMPCC MFT SB, which will get its power from the MFT Mount contacts available on the Studio Camera (which has a S16/1-inch sensor), and offered at 0.58 expansion of the image, giving you a more useable focal length range on the lens. ... -BMPCC-BT1
Denny Smith
SHA Productions

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