>>4404948Except a 20MP M43 sensor encounters diffraction at like f/5, so your lens is soft from shooting "wide open" (at f4.5 or w/e), doesn't get "sharp" until f/8, but diffraction started several stops ago; you're just finding the *least* soft point.
The vast majority of lenses made for every system ever are sharpest at f/5.6 or f/8, but your small manlet sensor has to fight the physics of light at a lower f/stop than an adult camera.
