Large objective lens modelExceptional vision quality meets high-end expectations.Large objective lenses incorporated in the design allow for contrast-rich, bright viewing under all light conditions.
First S-series models to feature ED (Extra-low Dispersion) glass elements, assuring a clear, high-contrast view of the image field and effective compensate of chromatic aberration
Productinformation about the SD ED-series, please find with following links:Product information SD-ED - series - English language ...
Product information SD-ED - series - French language ...
Product information SD-ED - series - German language ...