numbers don't talk to me that much... but this is not the point here. However i think the prime lens ranking is going to be bothered when you will review the 135f1.8 sony zeiss. and... the 50f1.4 sony zeiss planar! just purchased it, It's my 4th 50mm among every brands and this is stellar, contrasty as f*** straight from widest aperture. SSM crazy fast and accurate, way above all others CaNikon. Not flawless (distortion, CA f1.4), but almost, it's a must have and indirectly a must test. you must do it!