Sorry, I don't have this particular model (just took delivery on the X100), but I'm a bit confused, as the dpreview.com review of this camera ( http://www.dpreview.com/reviews/fujifilms100fs/
) lists it as only 11.1 megapixels (-- 2/3" sensor with 11.1 million effective pixels --). Sounds like the software may be doing some kind of enlargement process?
dpreview describes the software thusly -- "Interestingly, the FinePix Studio raw conversion spits out huge 22MP files (in TIFF or JPEG format) - a throwback to the old days when all Super CCD cameras rendered their images with double the number of pixels on the sensor. Look forward to 63MB TIFFs if you are happy working in 8-bit or 127MB if you prefer 16-bit."
In other words, I don't think you're seeing an actual increase in pixels, just a software function.