Do you use "zoom focus?"

Started Dec 16, 2011 | Discussions thread
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KentG Veteran Member • Posts: 4,367
Re: Do you use "zoom focus?"

Current zoom lenses are varifocal not parfocal. Parfocal means that the lens has the same focus point regardless of the zoom setting. Varifocal means that the focus point changes as the lens is zoomed. So whether you zoom in or not the camera must refocus at the new setting to have correct focus.
Kent Gittings

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