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Google Photos is getting a huge HDR upgrade for millions to boost your old pics
HDR comes to older images
HDR itself has existed as an option for images since Android 14, allowing for capturing photos with a wider range of light and color. Interestingly, Android Authority found that converted Ultra HDR images have noticeably smaller file sizes. This is due to HDR images using gain maps, which retain "luminosity information", allowing for brighter, more colorful pictures without needing as much detail as a full-resolution photo, they said.
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