I've recently learned that the aperture and only the aperture determines shallow DOF. The only reason the 75/1.8 usually seems to have a shallower DOF is NOT because it's a longer lens, rather, but because it's a longer lens the subject is filling more of the frame. So, while i like this lens, I now realize that I will get the exact same shallow DOF with the 45/1.8 if I step a little closer...and that (or any of the adapted nifty 50s) are much cheaper than the 75. So that leaves $1000 for me to buy another lens. 42/1.2 looks nice, but why spend $1500 for a 1.2 when I can get a 0.95 42.5mm Voigtlander for $1000? I'm actually going to use an old 35mm film camera (with the same Konica lenses I'm using on m43s) to experiment with shallow DOF. But, when it's said and done, for shallow DOF, wouldnt' the Voigtlander be the best bet? Thanks!