The property value can be retrieved by executing the File.GetImageFileType or theFile.GetImageFileTypeFromRawData method.
[Visual Basic] Public ReadOnly Property
ApertureValue1 As Integer
[C#] public int ApertureValue1 {get;}
Property Value
ApertureValue0 is the numerator for the lens aperature value
ApertureValue1 is the denominator for the lens aperature value
The lens aperature value (unit is the APEX value) = ApertureValue0 / ApertureValue1
*APEX is the Additive System of Photographic Exposure, a standard unit for expressing exposure.
Explanation
The property value can be retrieved by executing the File.GetImageFileType or the File.GetImageFileTypeFromRawData method.
The property value is derived from the image tags related to the picture taking conditions.