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<blockquote data-quote="hark" data-source="post: 224195" data-attributes="member: 13196">I still have a lens that I used with my N90s. It is a Sigma AF 70-210mm f/3.5-4.5 APO macro. Granted it is not a true macro lens--I'm not sure if it is 1:2 or 1:3, but will extension tubes work with this type of zoom macro lens? As a telephoto lens, it was pretty sharp--even sharper than the Sigma 28-70mm f/2.8 I used back then. I've kept it because of its low light ability and used it for taking photos of the local high school students theater productions prior to getting a new Sigma 70-200mm f/2.8. Since I've never used extension tubes, I don't know if compatibility is even an issue since the tubes don't have any glass....<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek!&nbsp; &nbsp; :eek:" loading="lazy" data-shortname=":eek:" />Thanks for any help! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" /></blockquote>

[QUOTE="hark, post: 224195, member: 13196"] I still have a lens that I used with my N90s. It is a Sigma AF 70-210mm f/3.5-4.5 APO macro. Granted it is not a true macro lens--I'm not sure if it is 1:2 or 1:3, but will extension tubes work with this type of zoom macro lens? As a telephoto lens, it was pretty sharp--even sharper than the Sigma 28-70mm f/2.8 I used back then. I've kept it because of its low light ability and used it for taking photos of the local high school students theater productions prior to getting a new Sigma 70-200mm f/2.8. Since I've never used extension tubes, I don't know if compatibility is even an issue since the tubes don't have any glass....:o Thanks for any help! :) [/QUOTE]

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