I have come across this problem and it's giving me some jip.
I have a function
I would like to be able to put in the field of view and then solve for the focal length. Is this possible, what with
there being 2 internal variables?
Many thanks in advance.
I see it, but I don't believe it.
Not without knowing 'width' too.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
You can solve for it but there will still be one more variable.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.