Quote:
Originally Posted by wulf
3x just means that your lens lets you make something appear three times closer if you go from no zoom to full zoom.
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And to further expand on this, an 18-55 is a 3X zoom as well as a 100-300 lens.
18mm x 3 = 54mm (close enough to 55mm)
100mm x 3 = 300mm
So while both lens are 3X, they both are drastically different on how far they can "zoom".
So yeah, the "X" means nothing more than the factor you multiply the wide end to get the telephoto end of the zoom.