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Message: <blockquote data-quote="Woodyg3" data-source="post: 424689" data-attributes="member: 24569">J-see, he's asking if diffraction is causing IQ problems in the f/40 shot. Note that the f/40 shot is pretty sharp, and that there is a great deal of DOF compared to the f/11 shot.Now, if you are still clinging to the belief that you can get the same depth of field by shooting with a larger aperture further away from the subject, WITH THE OBJECTS AT THE SAME IMAGE SIZE (which, by the way, would be MAGNIFICATION) you are simply mis-understanding depth of field. Honest. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /></blockquote>