Thanks to an evolutionary leap in image processing power and efficiency, the Alpha 7R IV combines world's first high-resolution 61MP back-illuminated Exmor R CMOS image sensor with impressive shooting speeds at up to 10 fps with full AF/AE tracking, as well as beautiful 4K HDR video, wide 15-stop dynamic range and high sensitivity with area specific noise reduction.World's first 61MP pixels full-frame sensorThe Alpha 7R IV features the world's first 35mm full-frame back-illuminated CMOS image sensor with 61MP effective pixels, delivering depth and dimension that was once only available in medium-format cameras. The back-illuminated structure and effective area specific noise reduction techniques combine to deliver an extraordinary blend of low noise and high sensitivity for enormous imaging potential.