The Sony 7.4" OLED HD ViewFinder for Portable Cameras is designed for use with HDC Series Cameras and helps to quickly track and focus on moving object, making it ideal for applications such as sports coverage, and focus assist function helps for accurate focusing. It uses organic Light Emitting Diode technology that draws less energy (19.5 W) and offers light emission from zero (deep blacks) to peak brightness (350 cd/m2) with a contrast ratio of more than 1,000,000:1