...lots of other interesting info along the way, with its main strength being its
pretty clear presentation:
https://photo.blogoverflow.com/2012/...of-resolution/

NB: with all articles like this, where there is an element of contention in the
subject matter, check out other sources of info. From a search on one of the
terms - line pairs per picture height - I got this list of references:
https://www.google.com/search?client...picture+height

(which I haven't started going through yet after the first article )