For a lens designed circa 2010, The 23/2 Fujinon is a unique lens in many ways.
It is deeply recessed ingot he camera body so it appears much smaller than it is. The maximum aperture is wide for the focal length. The rear element is extremely close to the sensor. The lens and sensor were designed together. The CFA micro lenses at the edge of the sensor gather light at different angles than those in the center. The Fuji design team publicly stated the lens should never be used for close ups at apertures wider than f 4. It has a built in ND filter. And, the leaf shutter is built into the lens.
Except in the case of strong point source lights, I found the 23/2 Fujinon to be a great performer. If the APS-C X Series began and ended with the X100, 1 would still be happily using one now.
For the photo shown below I certainly did not engage the ND filter at this light level. I did not use a filter at all. The OEM hood was installed. And I also observed that the ghosting did not depend on aperture. But is was highly dependent on angle. My camera was one of the first batch sold in the U.S.
Has anyone with a later X100 or a X100S seen this sort of behavior?
Fairmount Park Race Track 3327 by
william c hutton jr, on Flickr