A thought for the impoverished who might want to use an AF-S 58/1.4G neo-NOCT for candids, street and night photography: if you have a 50/1.8G and a high MP camera you can stand the same distance as you would with a 58mm lens using a 50mm (really 51.6mm) and shoot wide open. Later you crop a bit and all or almost all is well. No this won't help with coma (sagittal coma flare) but that's life in the slow lane.
Dave Hartman who wonders how many here like bats and their wings?
Should "sagittal" remind me of trigonometry and analytical geometry i took long ago?