Tamron AD (Anomalous Dispersion) : eBay Guides

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Anomalous Dispersion glass is a special optical glass that delivers an abnormally large partial dispersion ratio (amount of dispersion at a given wavelength range within visible light) relative to a specific wavelength zone. By combining AD glass elements with elements made of normal glass with different dispersion characteristics, dispersion factors of a specific wavelength can be controlled, resulting in effective compensation of on-axis chromatic aberration on telephoto lenses, or lateral chromatic aberration associated with wideangle lenses of conventional optical configuration.

Guide ID: 10000000007330160Guide created: 31/05/08 (updated 19/08/13)

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