Diglloyd has just published a comparison of the new Mono and the 35/1.4 asph fle verse the D800E and the Zeiss 35/1.4 . Even just reviewing the free examples on his blog its easy to see that the D800E files have a little more detail (viewing on a screen).
But the real question .....isn t this apples and oranges ? In his example ..he uses a nice landscape with an old mill building . This view could be certainly be photographed by either system and from what I could see both systems beat anything I have ever seen smaller than MF .
However the practical application of the two systems seem quite different . The lure of the MONO is high ISO performance ....I think of it as having Pan X rated at 1600-3200. Smooth even tonal distribution . The missing element in the Leica M system for a street shooter or any available light applications . Superb IQ in a range that exceeds any M solution ever.
The D800E (I have one ) and the 35/1.4 Zeiss is heavy . Its a big lens that has a very slow focusing throw . Manual focusing lenses using the viewfinder sucks on a D800E (of course live view is a solution when the photograph can be taken with care) .
For learning purposes ..its great to have benchmarks of performance ...but are these two really alternatives ?