Are you talking the Series E and the Japanese short throw 50/1.8? I think the Japanese copy is multicoated where the E is single coated. Only time I saw any difference was shooting into the sun; and barely at that.
No, not the series e 50. There were 2 pancakes made each for Japan and USA with Nikkor branding.
Should be no difference then.
The lens being asked about is the 50mm 1:1.8S originally made for Japanese distribution.
It was the first 50mm 1.8 Ai-s lens: From Bjorn's website: "The earliest AIS version of the 50/1.8 delivers a truly stellar performance on the D2X. The field is admirably flat, too. There is nothing more to be said here. As perfect a lens as anyone could imagine. What a shining little star this lens proved itself to be."
