Definition of opinion
https://www.merriam-webster.com/dictionary/opinion1 a : a view, judgment, or appraisal formed in the mind about a particular matter We asked them for their opinions about the new stadium.
b : approval, esteem I have no great opinion of his work.
2 a : belief stronger than impression and less strong than positive knowledge a person of rigid opinions
b : a generally held view news programs that shape public opinion
3 a : a formal expression of judgment or advice by an expert My doctor says that I need an operation, but I'm going to get a second opinion.
b : the formal expression (as by a judge, court, or referee) of the legal reasons and principles upon which a legal decision is based The article discusses the recent Supreme Court opinion.
Definition of fact
1 a : something that has actual existence space exploration is now a fact
b : an actual occurrence prove the fact of damage
2 : a piece of information presented as having objective reality These are the hard facts of the case.
3 : the quality of being actual : actuality a question of fact hinges on evidence
4 : a thing done: such as
a : crime accessory after the fact
b archaic : action
c obsolete : feat
5 archaic : performance, doing
— in fact
: in truth He looks younger, but in fact, he is 60 years old."
"3 : the quality of being actual"
So it maybe possible that an E-fit and a photo are in fact similar. The similarity being a fact rather than just an opinion. but we would need a way of defining the quality we are assessing.