After entering the Professional mode, select the parameters to be adjusted; Adjust the [ISO] value; The lower the value, the lower the brightness; In the case of sufficient scene lighting, the lower the ISO value, the better the picture quality Adjust [Shutter] The larger the value, the longer the shutter time, and the higher the brightness of the screen; The smaller the value, the shorter the shutter time, and the lower the brightness of the screen Adjust [Aperture] The larger the value, the smaller the amount of light, and the lower the brightness of the screen; The smaller the value, the more light, and the higher the brightness of the screen Note: The ISO value should not be set too high, which will easily cause noise on the screen. It is recommended that the ISO value should not exceed 320. The shutter selectable value is associated with the live frame rate selection, and the shutter parameter can only select a multiple of the live frame rate. For example, if the current live broadcast frame rate is 30fps, the current shutter can select 1/30, 1/60 and 1/120