Extra-low dispersion glass

Extra-Low Dispersion Glass All photographs are made with light, composed of many colors of the spectrum.

"ED" is extra-low dispersion glass, a more expensive and higher-quality glass that reduces chromatic aberration or "color fringing".

SAL-18200 18-200mm DT Lens [2], f/3.5-6.3 aperture, ED (Extra-low Dispersion Glass), 15 elements in 13 groups, Max magnification of 0.27, Circular Aperture(7 Blades), Angle of View(APS-C) 76ﾟ-8ﾟ, Filter Diameter: 62mm
[edit] Tamron ...

Nikon 60mm f/2.8G AF-S Micro - Nikkor Auto Focus Lens with Extra-low Dispersion Glass, 5 Year U.S.A. Warranty
$569.95
SHARE THIS ARTICLE ...

With two extra-low dispersion glass elements and three aspherical lens elements, the lens delivers high-resolution, high-contrast images while minimising chromatic aberration. Ideally suited for use on Nikon DX-format and FX-format cameras.

See also: Lenses, Autofocus, Aperture, Zoom, Element