Rob wrote: RS> Higher spatial frequencies usually produce worse graphs. I don't understand why RS> they have used non-standard 20/60 LPMM test frequencies as it makes comparisons RS> to other system difficult. What is interesting however is that even at 20LPMM RS> the graphs show lower than average contrast for the Macro lens at least is is RS> however very consistent across the image circle and shows very low geometric RS> distortion. I wouldn't say that the MTFs are overall impressive though.
The MTF test frequencies correspond to 10/30 lpmm for 35mm, if you want to make some direct comparisons. The 4/3" sensor is half the size of the 35mm frame, so its lenses need twice the resolution of the 35mm to have the same resolving power. The MTFs the impressed me in particular are those for the 300/2.8 (exceptional indeed) and the ones the zooms - quite remarkable considering the zoom range and aperture. Servus, Alin
