Preview op dpreview.com
http://www.dpreview.com/previews/ricohgrdiv/
Differences between the GRD IV and GRD III
* Improved AF speed (up to 2x faster) combining external AF sensors with conventional contrast AF
* RGBW 1.23 million dot VGA LCD screen vs. 920,000 dot RGB
* New GR Digital IV image processing engine
* Sensor-shift image stabilization
* Two new Image Setting presets (Positive Film and Bleach Bypass)
* New Auto-bracketing options for contrast and dynamic range compensation
* Enhanced level gauge that detects tilt direction in addition to horizontal inclination
Op basis van de eerste informatie geen reden om te upgraden van mijn huidige GRD III.