For p&s, diffraction sets in even earlier around f4-5.6. 4/3 starts showing diffraction around f11. How dare you imply that 4/3 is prosumer p&s!! :angry::flame::bsmilie:
Anyways for those interested, can read this: http://www.cambridgeincolour.com/tutorials/diffraction-photography.htm
LOL... depends on which PnS la. for my old S9500, diffraction starts around F8 and gets bad around F11 and really bad at F13
You inferred, I didn't imply. :bsmilie::bsmilie: