Canon EOS 250D Advanced User's Manual page 254

Lens electronic MFN (= 107)
z
Can be specified when using lenses that support electronic manual
focusing.
Grid when shooting
z
With [3x3 l] or [6x4 m], you can display grid lines to help you
level the camera vertically or horizontally before shooting. Also, with
[3x3+diag n], the grid is displayed together with diagonal lines to
help you compose with better balance by aligning the intersections over
the subject.
Note that the grid is not displayed on the LCD monitor during movie
shooting.
Shutter button function for movies
z
You can set the functions performed by pressing the shutter button
halfway or completely during movie shooting.
[Half-press]
- Can be set to [Meter.+kServo AF], [Meter.+One-Shot AF], or
[Metering only]. ([Meter.+One-Shot AF] is not available for 4K
movies.)
[Fully-press]
- Can be set to [No function] or [Start/stop mov rec].
With fully pressing the button set to [Start/stop mov rec], you can
start/stop movie recording not only by pressing the <A> or shutter
button completely but also by using Remote Switch RS-60E3 (sold
separately, = 463).
During movie shooting, the [5: Shutter btn function for movies] setting
z
overrides any function assigned to the shutter button with [Shutter/AE lock
button] under [5: Custom Functions(C.Fn)].
254