True or false? mu43 format, narrow aperture (>f5.6-8ish) results in lower resolution due to diffraction. Checked out my set of native mu43 lens. They all max out at f16 or f22. Do people really need the dof or slower shutter speeds of these small apertures? I'm assuming it doesn't require any significant additional costs to design and manufacture a lens that maxs out at f8 vs. f16/22. So the makers do so and just use it as a spec. feature for advertisement.