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Message: <blockquote data-quote="nikonjim" data-source="post: 95836" data-attributes="member: 9152">I have a Sigma 70-300mm APO macro Super lens with an AML macro screw-on lens.This lens served me very well on my F90, and does a good job as a telezoom on my D90, but it will not focus in Macro mode (even manually) with the AML lens attached.My camera manual isn't much help, so can anyone enlighten me as to why this is so??PS This message has taken over 20  minutes to type, as I'm on a ship off the west coast of Shetland and it's tossing about like a cork!!! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" />Jim</blockquote>