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.
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
You can solve for it but there will still be one more variable.
In mathematics, you don't understand things. You just get used to them.
I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.