The minimum focus score.
Valid values for the minimum acceptable focus score range from 0.0f to 10.0f.
The focus score is determined via image processing. A score of 0.0 would look completely out-of-focus. A score between 6.0 and 10.0 is the typical range of acceptable focus and minimal blur. If the focus score is less than the MinimumFocusScore, the LowFocusScore status will be used. If the focus score is above the MinimumFocusScore, the frame is used. the default value is 6.0f.