解決唔到呢個問題好難同a9平排坐
https://www.dpreview.com/forums/thread/4320456?page=2
Older mirrorless cameras, all current Canon mirrorless cameras (and most likely the R as well), and the Z6 and Z7 above 5.5fps, are unable to provide a real time liveview feed in continuous drive mode. These cameras, have, in fact, such a massive blackout that there is no liveview whatsoever during the entire burst. Basically, the "blackout" duration is the entire duration of the burst.