CMOS | Sensor | Active pixel sensor | sensor | Hall effect sensor | Surveillance Towed Array Sensor System | Piezoelectric sensor | Mass flow sensor | Inductive sensor | hall effect sensor | Aerial Common Sensor |
The camera's attributes are its optical viewfinder, modularity, and 35mm-width CMOS sensor.
The Sony Alpha a550 is "big brother" to the Sony Alpha a500, an almost identical DSLR with a smaller 12.3 megapixel APS-C CMOS sensor, no 7frame/s continuous shooting and a lower resolution LCD.
The device has a CCD or CMOS sensor that regularly takes short exposures of an area of sky near the object.
The main differences between the 20Da and 20D are the replacement of the "hot mirror" infra-red (IR) filter which covers the CMOS sensor on the 20D and live view mode.