Sony ILCA-77M2Q - Manual (Page 68)

Using the various functions
GB
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Using the [DRO/Auto HDR] function, you can capture various gradations
of the contrast of images.
[D-Range Opt.]: By dividing the image into small areas, the camera
analyses the contrast of light and shadow between the subject and the
background, and produces an image with the optimal brightness and
gradation.
[Auto HDR]: Shoots 3 images with different exposures, and then overlays
the correctly exposed image, the bright areas of an under exposed image
and the dark areas of an over exposed image to create an image with rich
gradation.
DRO/Auto HDR
1 MENU button t (Camera Settings) 5
t [DRO/Auto HDR]
2 Select the desired setting using v/V on the
multi-selector.