The new Sony Xperia Z comes with a great new feature for capturing photos and videos called HDR (High Dynamic Range). With the HDR function of the Exmor RS image sensor of Sony, you can capture great videos and photos even in high contrast scenes.
To achieve true HDR video recording, the advanced Exmor RS camera sensor in Xperia Z changes the exposure every two lines of pixels. This creates a spatially varying exposure (SVE) array image, which is then used to make an image that is perfectly exposed in both dark and light areas.
To simplify the concept, for each frame the camera shoots one picture with two different exposure levels at the same time, one light and one dark. Then, an intelligent software algorithm is used to combine (synthesise) the two shots into one picture, pixel by pixel. This allows you to see the details of both the dark and the bright parts of the picture.
With HDR for still images, the camera quickly captures the image twice with different exposure levels and stitches the two shots together to create one optimised photo. This way, HDR lets you capture clear photos even against strong backlight. HDR is automatically activated when Superior Auto detects scenes with strong backlight.