Metabones Speed Boosters are having quite a success. But for the first time we will also have a second company offering a similar, cheaper (and likely inferior optical quality) product. The first and long-awaited Lens Turbo for Micro Four Thirds will be announced next week! It will be a Nikon Ai to MFT adapter. Unlike previous info we got that adapter will still have the first generation lens design as the [shoplink 43003 ebay]NEX Lens Turbo (here on eBay)[/shoplink]. But it will have improved coating to reduce the “blue spot” issue.
A Lens Turbo for Canon EOS EF and Canon FD lenses will come as next in early 2014.
Example of how it works: If you buy the [shoplink 43005 ebay]Nikon Ai 55mm f/1.2 for $250 on eBay (Click here)[/shoplink], stick it on the Lens Turbo and you get a f/0.85 aperture and f/1.2 alike depth of field.
P.S.: All Nikon Ai lens auctions on [shoplink 43007 ebay]eBay (Click here)[/shoplink].