Fujifilm has today announced the new 'SuperCCD SR' sensor type. This announcement is the second of two which mark SuperCCD's fourth generation. The SuperCCD SR (Super Dynamic Range) offers almost two stops more dynamic range than conventional CCD. Beneath each microlens on the sensor surface (a photosite) are two photodiodes, the primary captures a dark and normal light levels (more sensitive), the secondary captures brighter details (less sensitive). The signals from the two photodiodes are intelligently combined by the camera to deliver an image with extended dynamic range. The first Super CCD SR sensor will have an effective resolution of three megapixels.