It was interesting to note that the X100 did pretty well on exposure in the bright environment. I did however notice a slight vignetting in some of the images. I had no lens shade or filter on the lens to cause this. I didn't find this a problem and occasionally would add vignetting in post processing.
Also, I found it helpful to use manual focus when I knew the camera would have chosen infinity. I would crank the MF over to infinity and not worry about achieving focus on a cloudy sky. Be careful not to rotate past infinity, which is easy to do, and cause bad focus problems.
If you hover your cursor in the upper right hand corner of the full image, an 'i' will become available for full exif info.