Have never used a Mirrorless, and recently ordered one (3-4 week arrival). So, have started reading up and watching various YT instruction videos.
I recall from a number of years ago, a Michael Reichman video discussing camera shake and his testing which showed, on a tripod, a DSLR when activated with a cable release, continued to vibrate (from mirror slap) for up to 12-14 seconds until perfectly still. So he recommended raising the mirror with the first release push button, waiting up to 12 seconds, then hitting the release a second time to take the photo. I have stuck to this process since then (predominately landscapes).
However, in many of the Mirrorless videos, the presenters suggest using the cameras time delay (some suggested 2 seconds while others suggested 3 seconds). This was when activating the camera by hand with the shutter button.
So, my question to those who have used a Mirrorless, is 2-3 seconds sufficient for complete cessation of vibration? I understand there is no mirror slap/shake but what about the vibration caused by hand-activating the shutter button?
Can't yet test it myself.
Marv