Here is a side by side comparison of 3 50mm lenses i currently own:
Nikkor 50 f1.8 AFD
Nikkor 50 f2 AI
Pentax SMC f1.4 Super Takumar
this McFarlane toy was shot available light on a sturdy ArcaSwiss Z1 tripod head and Gitzo 3-series tripod legs and manual focusing is done via D700's Live View feature. Manual Exposure using Sekonic light meter.
@f5.6 Original size
@f2.0 Original size
I leave to you who the winner is. The loser--as you may have figured out already--is me...because i should be out there making real pictures instead of doing this mundane lens tests.