Sony unveils a tiny HD 0.7-inch Display with 2100ppi

In the micro four thirds and similar range of cameras, you do not get an optical viewfinder instead, you get a little LCD in the viewfinder window if you get a viewfinder at all. Many just use Live View on the rear LCD.

Sony has a new tiny screen that will be used inside some of its cameras like the NEX series and possibly inside DSLR cameras. The tiny little OLED screen is only 0.7-inches wide and is called the ECX322A. The coolest part about the screen is the serious resolution it offers with 1280 x 720 allowing the viewfinder to offer 720p HD resolution.