FujiFilm X-S20 Mirrorless Camera with 18-55mm Lens (Black) - Manual (Page 270)

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Pla
yback and the Pla
yback M
enu
7
The Playback Menu
DISP ASPECT
Choose the aspect ratio used for the display of still pictures on
High Defi nition (HD) devices (this option is available only when
an HDMI cable is connected).
Options Options
16 : 9 3 : 2
N
Choose 16 : 9 to display photos with an aspect ratio of 3 : 2 full screen.
The pictures will be displayed full screen with tops and bottoms
cropped out.