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Message: <blockquote data-quote="WayneF" data-source="post: 428908" data-attributes="member: 12496">No dispute about sensors causing effects.  DX is smaller, more narrow view, and has to be enlarged half again more.  FX cropped to DX has only about 40% pixels than if not cropped, whereas DX sensor is full size there.  etc, etc.   But that is not about lenses.Pursuant to this tread, the same lens is the same lens, and the central area of any lens is always better than the edge area (in any test).  The FX edges of a DX lens are normally absolutely horrible.  <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /></blockquote>