Most DIY alleged sharpness tests are basically BS for at least one simple reason, esp with short focal
lengths like the one in question: the variations in film plane in a conventional holder affect focus more than variations between lenses! You'd have to use a vacuum holder or glass plate, or compare
aerial images w/o film. In the specific comparison of a Nkkor 4.5 vs f/8 it's mainly a tradeoff between
portability vs brighter viewing. The difference in optical performance per se is probably miniscule.