Sony DSC-HX90V Manual page 54

Snow:
Allows you to shoot clear images, preventing sunken colors in snowy scenes or other places
where the whole screen appears white.
Fireworks:
Allows you to shoot images of fireworks in all their splendor.
Soft Skin:
Allows you to shoot images of faces with a smoother look.
High Sensitivity:
Allows you to shoot still images even in dark locations without using the flash, and reduces
subject blur. Also allows you to shoot dark movie scenes more brightly.
Note
Under the following settings, the shutter speed is slower, so use of a tripod is
recommended to prevent the image from blurring:
[Night Scene]
[Night Portrait]