The Fujifilm X100S Digital Camera features a 16 megapixel APS-C-sized X-Trans CMOS II sensor and an EXR Processor II image processor to provide high quality imagery and exceptional camera performance. The combination of the sensor and processor enables a native sensitivity range from ISO 200-6400, which is further expandable to ISO 100-25600.
Fujifilm's proprietary X-Trans sensor uses a unique randomized pixel array in order to avoid the use of a resolution-reducing optical low-pass filter, therefore providing images with the utmost sharpness and clarity. This imaging system is benefitted by the Intelligent Hybrid AF system, which uses both contrast- and phase-detection methods to acquire focus quickly and accurately. The EXR Processor II also delivers fast performance speeds to all aspects of the camera, ranging from quick startup and shutter lag times to a fast 6fps continuous shooting rate.
A built-in 23mm f/2 fixed focal length lens is used and provides a 35mm-equivalent focal length of 35mm, which is ideally suited as an everyday-use wide-angle lens. The fast f/2 maximum aperture benefits both low-light shooting as well as control over the focus in the image.