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Photographic Zoom Lens Cutaway



GWai 35mm SLR Zoom Lens: Side view with 130° cutaway
GWai 35mm SLR Zoom Lens: Top view with 130° cutaway


Please move your mouse over the Camera Zoom Lens above to view the sectioned cutaway


Definition: A zoom lens is a mechanical assembly of lens elements with the ability to vary its focal length. A true zoom lens (Parfocal), is one that maintains correct focus when its focal length changes. A lens that loses focus during zooming is more correctly called a Varifocal lens.