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....
Thanks for any help!
Thanks for any help!