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Message: <blockquote data-quote="Englischdude" data-source="post: 353795" data-attributes="member: 16372"><p>how I have always understood it, is that the maximum focal length will only give you the maximum multiplication factor at INFINITY. As soon as you try to zoom in on a subject closer than infinity the magnification factor reduces. This is most noticable and frustrating when you buy for example a 18-200 zoom lens thinking you will be able to zoom it on a flower at the minimal focal distance of the lens and expect the same magnication factor as at infinity. I once saw a test online somewhere, where a ?-200mm zoom gave about an 11x magnification at infinity, however when focused in on something at a few meters away the magnification factor was reduced to about 5.</p></blockquote><p></p>