EDIS Length of eccentricity vector

Columns	format	contents/explanation
1-4	A4	EDIS                                (format-free)
	A	Camera name
	A	s' Length of eccentricity vector e'
	F	ss' Standard deviation of vector length         Default = 0.001

For certain cameras and camera systems the single components of eccentricity vectors cannot be determined easily. However in many cases the length of these vectors is known or measurable. In this case it is recommended to introduce this length as observation into the equation. For this purpose it is required that the respective e' vector becomes part of the equation as unknown.