F stop for landscapes w/ em-5

Here you have good and trusted information and a real diffraction calculator on the same page.

This site might be useful to you for other things, it is a matter of explore it.

Scroll down to the diffraction calculator.

LENS DIFFRACTION & PHOTOGRAPHY

--  
Simplicity is the ultimate sophistication.
Pure logic is the ruin of the spirit.
Imagination is more important than knowledge.
God is the tangential point between zero and infinity.
Aleo Photo Site