Lens Question

[ShepherdLady]

Hey Everyone,

This might be a silly question, but on some Olympus lens, they have ED at the end of description of the lens. Some lens have it some don't.

Anyone know what it means??

[inkista]

It stands for "Extra-low Dispersion" glass. It's glass that can minimize chromatic aberration (when the glass's index of refraction is high enough, different wavelengths end up in different locations, and you get red/blue "shadows" or green/purple ones).

[ShepherdLady]

Originally Posted by inkista

It stands for "Extra-low Dispersion" glass. It's glass that can minimize chromatic aberration (when the glass's index of refraction is high enough, different wavelengths end up in different locations, and you get red/blue "shadows" or green/purple ones).

Thank you so much Inkista. I had no idea. Makes me feel better about getting the 14mm-54mm lens.