The high readout speed of the CMOS sensor and high image processing speed enables captured images to be continuously displayed without interruption on the electronic viewfinder ( EVF ) even during high-speed burst shooting with electronic shutter . Blackout-free shooting allows photographers to keep their eyes on the subject throughout the sequence . This is particularly useful when capturing fast-moving subjects with unpredictable movement .
Conventional OVF ( SLR ) when mechanical shutter is used
Blackouts occur during continuous shooting
EOS R3 ’ s EVF when electronic shutter is used for blackout-free shooting