I allways wanted a better ta 50mm better than the nikkors avalable; Now i have it!
Just got the 50mm art lens for my Nikon d800e today;
really heavy - built like a tank.
a bit too short focus throw for my liking.
Fast autofocus: faster than the 1,8 50mm Nikon ( and then the 1,8 is faster than either the Nikkors 58mm and 50 mm1,4)
very near focussing.
As tested on a 20m distance brick wall:
flat field of sharpness
Open gives a very clear and sharp image. ( unlike the 50mm Nikkors) and improves to 2,8 with microcontrast. The image circle from the center to the top is really good at 1,4
Extreme cornes are very good at d5,6.
The lens is at 1,4 as good as my nikkor was at 2,8 with more microcontrast!
I like it! but will keep the small 1,8 nikkor for its lightweight and size.