Manufacturer's description:
The X100 is all traditional rangefinder design on the outside, all 21st-century technology on the inside.
Large 12.3MP APS-C Size CMOS Sensor
FUJINON 23mm (35mm equivalent) Single Focal Length Fixed F2 Lens
Switchable Optical/Electronic Viewfinder
2.8" LCD Monitor W/460K-Dot Resolution
JPEG + RAW (Process In-Camera)
100-12800 ISO Capabilities
HD 720p Video W/Stereo Sound
Classic Design Magnesium Alloy Body
High Speed Contrast Autofocus
Built-In Flash--Compatible W/Optional EF-20 & EF-42 Shoe-Mount Flashes