Ricoh GRD4 was announced in September 2011. Ricoh F1.9 large aperture digital camera GRD4 features Quick shooting capabilities combined with precision focus and Hybrid autofocus system. The GR DIGITAL IV employs a hybrid autofocus system that combines an
external auto focus with a conventional contrast autofocus system. The external auto focus is designed for fast focus. While the shutter-release button is pressed, the camera can take a
series of photos while adjusting its focus on the subject using the
external autofocus.The large aperture F1.9 complement with the sensor shift image stabilization are good for low light shooting. The highest possible ISO setting is 3200. 3-inch screen (approximately 1.23 million-dot* VGA) is bright to improve viewing under bright sunlight.