With my Nikons, that was not my experience. I had two 50/1.4 and one 50/1.2, all late pre ai. I discovered that at f:2, the 50/2 Nikkor H was as good as or better than either of the faster lenses at the same (f:2) aperture. At f:4, still no edge to the faster lenses, and the 1.2 was a handful - a fair amount of flare even at smaller apertures due to all the area of all those big elements bouncing light around inside.
Originally Posted by AgX
I now have two of the f:2-Hs a 66 and a 70-71, they're the only Nikon 50s I have.
But, the fact remains that an f:1.4/1.2 lens can sometimes get you a picture when a one stop slower lens won't.