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Message: <blockquote data-quote="james holdsworth" data-source="post: 3898937" data-attributes="member: 79864"><p>My pair, despite being incredible robust for all types of fieldwork etc., do have a semi-sticky focus. It's caused by the rubber cover rubbing against the chassis and seems worse in warm and humid conditions - when the rubber expands the most I guess. Very minor for me and so variable that I don't notice most of the time.</p></blockquote><p></p>