Full-frame, palm-sized a. Sensitivity mastered. Ultra-high sensitivity 3.5cm full-frame sensor delivers ultra wide dynamic range for high quality stills & videos Sony’s new 12.2 megapixel*1 image sensor achieves awe-inspiring sensitivity from ISO 50 to 409600*2 & a wide dynamic range with extremely low noise throughout the entire ISO range. So you can capture what could never be captured before in both still images & videos. High shutter speed usage in low lighting, for example, is now practical at last thanks to accumulated Sony image sensor technology including extra-large pixels & sophisticated light capturing technology. Gapless on-chip lenses enhance light gathering efficiency The image sensor’s high sensitivity was enhanced by eliminating the gaps between every on-chip lens (OCL) covering every pixel. Since there is no wasted space between these lenses, they gather far more light for the image sensor. Sony also optimally positioned them depending on their location to match the way light enters the sensor at sharper angles near the periphery. These advances raise sensitivity while maintaining extremely low noise to deliver an impressive S/N ratio whether shooting still images or videos. High-speed BIONZ X image processing engine Every detail of your subject & scene is faithfully reproduced in real time, as seen by the naked eye, by the accelerated processing of Sony’s optimised BIONZ X image processing engine. Sony specially modified BIONZ X to complement the sensor’s phenomenal sensitivity & deliver supremely natural details, stunning realism, rich tonal gradation & exceptionally low noise whether shooting still images or videos. Detail reproduction technology & diffraction-reducing technology Detail reproduction technology makes every detail look more natural by preventing overemphasised outlines. Diffraction-reducing technology restores clarity to fine details that diffraction tends to blur at small aperture settings (large F numbers), thus bringing out more of the potential of your lens, especially during deep focus shooting Explore a new world of imaging expression with the a 7S. It combines phenomenal sensitivity up to 409600*1 for stills & videos with supremely low noise & the world's first full-frame sensor capable of full pixel readout*2 without pixel binning for 4K*3 HDMI video output while utilising the full width of the sensor. Professional video functions satisfy serious photographers & videographers, plus everything is precision-packed in the world's smallest interchangeable lens digital camera*4 for unparalleled mobility.