Lists all CIFF Focal Length tag identifiers.
Values:
| IGMDTAG_ID_CIFF_FOCAL_LENGTH_LENGTH | Focal length. |
| IGMDTAG_ID_CIFF_FOCAL_LENGTH_PLANE_XSIZE | Focal plane X size. |
| IGMDTAG_ID_CIFF_FOCAL_LENGTH_PLANE_YSIZE | Focal plane Y size. |
| ImageGear Professional DLL v17.1 for Windows |  |
| enumIGCIFFFocalLengthTagIDs | |
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| ImageGear Professional DLL v17.1 for Windows > API Reference Guide > Core Component API Reference > Core Component Enumerations Reference > enumIGCIFFFocalLengthTagIDs |