Samsung 50 megapixel image sensor has 1.4-micron pixels

February 23, 2021 //By Peter Clarke
Samsung 50 megapixel image sensor has 1.4-micron pixels
Samsung Electronics Co. Ltd., has introduced the Isocell GN2, a 50-megapixel (Mp) image sensor with 1.4-micron-sized pixels.

The GN2 offers up to 100-megapixel imaging, improved auto-focusing and staggered high dynamic range.

The 1/1.12-inch Isocell GN2 has a 1inch by 1.2inch format and simulate 2.8micron-pixels with four-pixel-binning technology to absorb more light for low light imaging at reduced resolution.

In 100Mp mode, the GN2 meticulously re-arranges the color pixels using an intelligent re-mosaic algorithm, creating three individual layers of 50Mp frames in green, red and blue. These frames are then up-scaled and merged to produce a single ultra-high 100Mp resolution photograph.

The Isocell GN2 is Samsung’s first image sensor to offer Dual Pixel Pro, the company’s most advanced phase-detection auto-focus solution yet. By employing two photodiodes within every pixel of the image sensor, Dual Pixel Pro makes use of one hundred million phase detecting agents for ultra-fast auto-focusing. In addition, the solution also offers all-direction focusing by splitting the pixels not only vertically, as with Dual Pixel, but also diagonally. This diagonal cut allows the focusing agents to better recognize the top and bottom of the frame, allowing the sensor to get in focus quickly even when there are no pattern changes in a horizontal direction. Low-light focusing and tracking of moving objects are improved as well, as every pixel of the sensor works as focusing agents.

For taking pictures in mixed-light environments, such as sunsets or indoors with daylight coming through a window, the GN2 increases its dynamic range with a staggered-HDR feature, a time-multiplexed HDR technology that uses rolling shutters over the same pixel arrays to capture multiple frames in short, middle, and long exposures. By maximizing the dynamic range, staggered-HDR ensures rich detail and vivid color in highlights and dark shadows within the scene, making it an ideal solution for shooting high-contrast sights. Staggered-HDR is able to reduce the energy consumption of a sensor by up to 24-percent when compared to the predecessor’s real-time HDR mode, contributing to improved energy efficiency of the overall system.

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