Sony DSC-RX100M5 Help Guide Printable PDF - Page 151

Setting this item to [On] where wind is not blowing sufficiently hard may cause normal sound to be recorded with too low volume. [123] How to Use Using shooting functions Recording movies Auto Slow Shut. (movie) Sets whether or not to adjust the shutter speed automatically when recording movies if the subject is dark. 1. MENU → setting. (Camera Settings) → [ Auto Slow Shut.] → desired Menu item details On: Uses [ Auto Slow Shut.]. The shutter speed automatically slows when recording in dark locations. You can reduce noise in the movie by using a slow shutter speed when recording in dark locations. Off: Does not use [ Auto Slow Shut.]. The recorded movie will be darker than when [On] is selected, but you can record movies with smoother motion and less object blur. Note [ Auto Slow Shut.] does not function in the following situations: (Shutter Priority) (Manual Exposure) When [ISO] is set to other than [ISO AUTO]. [124] How to Use Using shooting functions Recording movies MOVIE Button Sets whether or not to activate the MOVIE button.