Image Capture

• CCD, CMOS, or NMOS sensor arrays with a color

filter array or Foveon “stacked” sensors

• Analog converted to 8-14 bit digital values

• Each light-sensitive position is called a pixel

(~3MP is comparable to 35mm)

• Grain is mostly noise, also sensor pixel count

• Sensor noise is generally less for: bigger pixels,

colder temperatures, & faster shutter speeds