All of the Nikon 50mm lenses are very good. I have eleven 55/3.5 Micro Nikkors and two 55/2.8 Micro Nikkors. I also have seven different 50/1.4 Nikkors: pointy prong S, round prong S, SC, early 'K', late 'K', AI and AIS. The Micro Nikkors are not realy suited to low light photography and the 50/1.4 lenses aren't nearly as good close up. The 50/2 H and later models and the 50/1.8 lenses are good with close-up lenses attached, good with some extension and very good reversed with extension.