Hello there, Is there a simple tool/method to know the "optimum f/stop" for an image? Defocus vs. diffraction. I read the info from the largeformat.info website but find it somewhat complicated, plus my camera (Ebony 45SU) which has Assymetrical tilt is different than traditional view camera when talking about how far my rail travel to focus between near & far, as it is a matter of focus on one axis, tilt untill the whole scene is in sharp focus. But how do you know that you get the right f/stop? Thanks in advance. Mohsen. Saudi Arabia.