But a f/1.2 lens for m43 and an f/1.2 lens for FF aren't equivalent so comparing those lenses isn't really apples to apples. Not just in DOF but in virtually every way that matters.Looking at the expected specs of this lens (about the same size as the 12-40 2.8) when attached to an E-M1, and you'll see that Olympus has built a camera/lens combo that is similar in dimension to the Canon's 1.2L + Full Frame combo (and is actually quite a bit smaller than Canon's 80D when paired with the 35 1.4L).
+1, there are more effective systems if size isn't a consideration.Sorry, but if u43 isn't about small size with good-enough IQ then what *is* it about? If I want shallow DOF, fast shutter in low light or high ISO with low noise then I'd be in FF land (probably A7) since u43 isn't the ideal platform to do these things. I know that u43 with this sort of fast glass *can* get me there, but frankly it still won't be as good. It's definitely about horses for courses - but the best horse for narrow DOF is to buy an FF camera and not try to adapt a small-sensor to that task.
Although, if you only use this lens in limited circumstances and don't want to have to buy/carry a second body I can see where it could make sense for a niche market.