Last week Metabones officially announced that the new MFT Speed Booster adapter release has been delayed til late 2013. But there could be a good news soon. The Chinese company Zhongyi Optical announced the cheap alternative of the Speed Booster named “Lens Turbo” The first adapters are made for the Sony E-mount system but the MFT version should follow soon. There are some differences with the popular Speed Boosters:
1) They have no electronic contacts (no AF and no automatic Aperture control).
2) To avoid patent disputes with Metabones the adapter has a different design and a reduction ration of 0.726 (Speed Booster is 0.71)
3) The Lens Turbo price is set at US$239 which is half the price of the Metabones Speed Boosters
Zhongyi Optical also makes the Mitakon 35mm f/0.95 lens (here on eBay). But…I am not sure Metabones lawyers will stay calm on this…
Reminder: Here are the links to the lenses you can find on eBay and that will be supported by the Speed Booster MFT adapter:
Nikon F lenses Contax C/Y lenses Contarex lenses Alpa lenses Rollei lenses Canon EF lenses