Canon EOS R10 User Manual page 284

4.
Select [Pre-shooting].
5.
Set an option.
[Enable]: Shooting begins slightly before (up to approx. 0.5 sec.
before) you press the shutter button completely, after you momentarily
press it halfway. [
[Disable]: Shooting begins when you press the shutter button
completely. [
] is displayed when you shoot.
] is displayed when you shoot.
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