Sony ILCE-9M2 Operating Instructions - Page 78

e-Front Curtain Shutter The electronic front curtain shutter function shortens the time lag between when the shutter button is pressed and the shutter is released. You can use [e-Front Curtain Shutter] when [ Shutter Type] is set to [Mechanical Shutter]. MENU  (Camera Settings 2)  [e-Front Curtain Shutter]  desired setting. On: Uses the electronic front curtain shutter function. Off: Does not use the electronic front curtain shutter function. Note ••When you shoot at high shutter speeds with a large-aperture lens attached, out-of-focus circle produced by the bokeh effect may get cut off because of the shutter mechanism. If this happens, set [e-Front Curtain Shutter] to [Off]. ••When a lens made by another manufacturer (including a Minolta/Konica-Minolta lens) is used, set this function to [Off]. If you set this function to [On], the correct exposure will not be set or the image brightness will be uneven. ••When you shoot at high shutter speeds, the image brightness may become uneven depending on the shooting environment. In such cases, set [e-Front Curtain Shutter] to [Off]. GB 78