The Gratical HD EVF is a complete electronic viewfinder that incorporates the very latest in OLED and processing technology. Unlike with an optical viewfinder or standard electronic viewfinder, with Zacuto and the Gratical HD EVF, you can trust you’re seeing a realistic visualization of your final image without having to look away from the eyepiece.
The new a7R II interchangeable lens camera features the world's first back-illuminated full-frame Exmor R CMOS sensor, which realizes high resolution (42.4 MP approx. effective megapixels), high sensitivity (expandable up to ISO 102400) and high speed AF response up to 40% faster than the original a7R.