NAME
	  DtCameraGetFocalDistance - Get the given camera's focal
	  distance.


     SYNOPSIS
	  #include <Dt.h>


	  int  DtCameraGetFocalDistance( int cameraID, float *focal )


     DESCRIPTION
	  DtCameraGetFocalDistance() returns the focal distance, via
	  the pointer to the focal parameter, for the camera cameraID.


     DIAGNOSTICS
	  DtCameraGetFocalDistance() returns one on success and	zero
	  on failure.


     FILES
	  Link with -lDtOMio