I have been told by multiple sources that Metabones will do me (sorry us) a favour and release the new OM to MFT Speed Booster adapter within the next few weeks! That’s great news for all us OM lens owners! All lenses will become faster and FF equivalent. Here is the Metabones pdf file that explains how to do the math. An example, the 35mm f/2.0 OM lens on the Speed Booster becomes a 25mm f/1.4 lens.
And as you know there are a huge amount of OM lenses we can use! This is just the list of the prime lenses…Click on the link to check the price and auctions on eBay: 21mm f/2.0 and 21mm f/3.5 lens, 24mm f/2.0 and 24mm f/2.8 and 24mm f/3.5 shift lens, 28mm f/2.0 and 28mm f/2.8 and 28mm f/3.5 lens, 35mm f/2.0 and 35mm f/2.8 and 35mm f/2.8 shift lens, 40mm f/2.0 lens, 50mm f/1.2 and 50mm f/1.4 and 50mm f/1.8 and 50mm f/2.0 macro and 50mm f/3.5 lens, 55mm f/3.5 macro lens, 85mm f/2.0 lens, 90mm f/2.0 macro lens, 100mm f/2.0 and 100mm f/2.8 lens, 135mm f/2.8 and 135mm f/3.5 lens, 180mm f/2.0 and 180mm f/2.8 lens, 200mm f/4.0 and 200mm f/5.0 lens, 250mm f/2.0 lens, 300mm f/4.5 lens, 350mm f/2.8 lens,, 400mm f/6.4 lens, 500mm f/8.0 lens, 600mm f/6.6 lens, 1000mm f/11 lens.