Reference Manual

153
Movies
Choose Image Area
Choose a movie crop from [FX] and [DX]. Select [FX] to shoot
movies in what is referred to as “FX-based movie format”, [DX]
to shoot in “DX-based movie format”. The movie crop is fixed at
1.7× at a frame size of 3840 × 2160. The differences are
illustrated below.
FX 3840×2160DX