The Pentax K100D and similar Pentax K110D are 6 megapixel digital single-lens reflex cameras, launched in the U.S. on May 22, 2006. The K100D has a maximum resolution of 3008 x 2008, and can also down-sample to 2400 x 1600 and 1536 x 1024. The slowest metered shutter speed is 30 seconds and the fastest shutter is 1/4000 seconds. The K100D features a six effective megapixel CCD sensor, coupled with an analog-to-digital converter (ADC) and a sensor-based shake reduction system. The K110D has exactly the same features as the K100D, except it lacks built-in shake reduction.