TIFF Tag DepthMeasureType
|Code||51181 (hex 0xC7ED)|
Used in IFD 0 of DNG files.
Specifies the measurement geometry for the depth map. Valid values are:
0 = Unknown: The measurement geometry is unknown.
1 = Optical Axis: Depth is measured along the optical axis.
2 = Optical Ray: Depth is measured along the optical ray passing through each pixel.