Additionally, a manual aperture ring is featured for intuitive, tactile adjustment over exposure settings, and a Command position can also be set for camera-based control over the aperture. Standard-length prime lens offers a 50mm equivalent focal length to realize a normal field of view for working with a variety of subjects. Bright f/2.8 maximum aperture benefits working in low-light conditions as well as enables a high degree of control over depth of field. The optical design incorporates one extra-low dispersion element to reduce chromatic aberrations and color fringing throughout the aperture and focusing ranges for notable clarity and color fidelity. The front optical group is used for focusing to Minimize aberrations and distortions throughout the focusing range. Physical aperture ring allows for intuitive adjustment over exposure settings, and incorporates a C (Command) position to permit camera-based aperture setting. The front element features a hydrophobic fluorine coating to repel moisture. Dust- and weather-sealed physical construction enables working in harsh climates and temperatures as low as 14°F. Rounded nine-blade diaphragm contributes to a pleasing bokeh quality.
