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org Basic Member
Wed 20-Jun-01 08:46 AM

I've been puzzling over this:

How does adding an extension tube affect the magnification ratio of the lens? Does it mean that if I were to add a 50mm tube to a lens at a focal length of 50mm(zoom, prime), my magnification ratio is 2:1 regardless of the lens's magnification ratio?

Hope I have worded the question correctly.