[Klaus]

Sorry just realized it's not a 100% crop. I think it was resized by website, so I uploaded the 100% crop as the third file.

 

I'm really hesitating if I should waste my life with Fujifilm service center, Last time I had an X100 with slanted viewfinder, it took 4 months, 4 round trips and numerous calls to get the machine repaired...and in the end they have to replace the machine because they broke a new part when they got the old probelm fixed...

Well, if this is the very sharpest setting you can get, then it has a centering problem ( if this crop is from the image center! ). Point is that in the image center everything has to be symmetrical - at least once total focus has been achieved.

This has nothing to do with the coating - a weak coating would show up at all edges not just the lower left ones.