[b]SONY Starvis 2 sensor generation with ClearHDR feature[/b] Image sensors can adjust the length of time to take in light (exposure time) to output images, optimized according to the brightness of the scene. A short exposure time in a bright environment avoids oversaturation of the photodiode and a long exposure time in a dark environment ensures the collection of a sufficient amount of light. In contexts where both extremely bright and dark areas are in view, such as a strong light source next to a tunnel exit, these areas of the image may be over- or under-exposed and details could be lost. When we can see details in both bright and dark areas of an image, it is said to have a high dynamic range, and the attribute for realizing this is called a high dynamic range (HDR) [b]Clear HDR[/b] When the Clear HDR feature is on, the image sensor captures two images simultaneously, one with a low gain level set to the bright region and the other with a high gain level adjusted to the dark region*2. The images are then synthesized.(Source: [url=https://www.sony-semicon.com/en/technology/security/index.html]https://www.sony-semicon.com/en/technology/security/index.html)[/url] [b]Current vendors supporting ClearHDR feature:[/b] QHYCCD ("linearity HDR mode"; Source: [url=https://www.qhyccd.com/minicam8-imx585/]Minicam8[/url]) Touptek Vendor rebrands sourcing cameras from Touptek (Source, Touptek manual of the [url=https://www.touptek-astro.com/dl_manual/ATR585C_en.pdf]ATR585C[/url])