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Message: <blockquote data-quote="AperturePriority" data-source="post: 53670" data-attributes="member: 9275">What you don't get is I was talking about sharpness vs DoF of the lens Jeff. Pro photographers talking about "sweetpoint" of a lens including those factors like ligh fall off, spherical abberation, softness at the coners, distortion,... That is right. But that doesn't mean the sharpness of a lens is best at its "sweetpoint".Take any of your lens and test and you gona see that. Even with a 50mm serier E f/1.8, pictures taken at 1.8 have sharpness at center better than those taken at its sweetpoint 5.6.The more you gain DoF in stopping down your lens, the more you loose your lens sharpness. Nothing is free.</blockquote>