During Samsung Unpacked event last month in Barcelona, Spain where the company officially announced this year's flagships Galaxy S7 and S7 Edge, Samsung also introduced a new camera technology, the 12MP image sensor with Dual Pixel technology. This promises to elevate the quality of mobile phone pictures.
Already in mass production, this 1.4um-pixel-based image sensor is equipped with Dual Pixel technology that has been reserved for DSLR cameras. This new feature enables rapid auto-focus for fast photo shooting while producing premium image quality on mobile devices, even in low light situations.
"With 12 million pixels working as a phase detection auto-focus (PDAF) agent, the new image sensor brings professional auto-focusing performance to a mobile device, said Ben K. Hur, Vice President of Marketing, System LSI Business at Samsung Electronics. "Consumers will be able to capture their daily events and precious moments instantly on a smartphone as the moments unfold, regardless of the lighting conditions."
So this Samsung's new Dual Pixel technology employs two photodiodes located on the left and right halves of a pixel, while a conventional image sensor dedicates less than five percent of its pixels, with one photodiode each that converts light particles into measurable photocurrent for phase detection. As each and every pixel of the Dual Pixel image sensor is capable of detecting phase differences of perceived light, significantly faster autofocus has become possible. With such groundbreaking improvements, the image sensor ensures clear and sharp images especially for moving objects even in poor lighting conditions.
The image sensor has also adopted Samsung's ISOCELL technology, which isolates the photodiodes in each pixel with a physical wall to further reduce color cross talk, maximizing the image sensor's performance.
For top-of-the-line performance while keeping the size to a minimum, the new image sensor is built with cutting-edge chip-stacking technology. The Dual-Pixel image sensor stacks a 65 nanometer (nm) sensor and 28nm logic chip together to deliver outstanding photo-taking experience in today's sleek smartphones.
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