Constructional details of the APO-Summicron-SL 75mm F/2 ASPH.
The optical design of the APO-Summicron-SL 75 f/2 ASPH. consists of 11 elements, including one with an aspherical surface. Many of these elements are crafted from specially developed, high-quality glass types designed to correct chromatic aberrations.
These glasses feature anomalous partial dispersion, allowing them to counteract chromatic aberrations caused by other components in the system. As a result, even image highlights remain virtually free from color fringing, ensuring exceptional image quality.
AF System with Dual Syncro Drive™
The Summicron-SL lenses feature a fast, precise, and nearly silent autofocus system, thanks to their advanced drive unit and compact, integrated design. Developed by an interdisciplinary team, the lenses use a unique double internal focusing system with lightweight elements, enabling small yet powerful drive systems.
The robust stepping motors with Dual Syncro Drive™ allow rapid, accurate movements to meet the demands of contrast-based autofocus, ensuring exceptional performance. These lenses stand out in the full-frame segment for their speed, precision, and low noise levels, making them ideal for professional use.
