I have compared my OM 50mm f1.4 with the new Oly 45 f1.8 using the following procedure:
1. Still life with relatively strong back light - composition at roughly portrait distance (5').
2. MF on specific spot (center cactus tip)
3. Shots at all apertures (1.4/1.8, 2, 2.8, 4, 5.6, 8, 11) -...