[Guest]

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.

 

Hi Klaus, thanks, this attachment is from image center...

 

I'll contact Fuji and see what they say...