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Message: <blockquote data-quote="WayneF" data-source="post: 550280" data-attributes="member: 12496"><p>I have never used that lens (so I don't know nothin'), but that is not an uncommon issue with the internal focusing lenses.  Your 185mm result is quite short, and I wondered if you were testing with a pretty short focus distance, a few feet, close to minimum distance?     That result probably varies with distance, and long focus distances (where you'd probably use 300 mm) might test a lot better.</p></blockquote><p></p>