Leica 35mm SL APO-Summicron f2 ASPH.

Leica Summicron SL 35mm lens

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A favored and versatile focal length combined with an optically refined design, the APO-Summicron-SL 35mm f/2 ASPH LEICA . is a first general wide-angle designed for full-frame L-mount mirrorless cameras. The bright f/2 maximum aperture strikes a balance between speed, weight, and overall size, and offers a portable form factor along with the ability to excel in available light conditions. The apochromatic optical design uses anomalous partial dispersion glass to suppress color stripes and chromatic aberrations for greater clarity and color accuracy, and five aspherical elements are also presented to reduce spherical aberrations to improve sharpness. Multi-layer coatings have also been applied to limit flare and ghosting to increase contrast when working in bright lighting conditions. Complementing the optics is a dual-sync stepper motor, which offers fast and quiet autofocus performance to suit both still images and video applications. In addition, an AquaDura coating has been applied to the exposed elements and seals have been incorporated into the lens design to benefit work in adverse environmental conditions.

• The 35mm f/2 wide-angle lens is designed for full-frame L-mount mirrorless cameras, however, it can also be used with APS-C models where it provides an equivalent focal length of 52.5mm.
• The maximum aperture of bright f/2 benefits working in low-light conditions and also provides greater control over depth of field for working with selective focusing techniques.
• Five aspherical elements are used to reduce distortion and spherical aberrations to improve sharpness and accurate representation.
• The apochromatic design employs anomalous partial dispersion glass to suppress chromatic aberrations throughout the aperture range for greater color accuracy and clarity.
• Multi-layer coatings have been applied to individual elements to suppress surface reflections, flares, and ghosting to increase contrast and color fidelity.
• The Dual Syncro Drive stepper motor delivers fast, accurate and near-silent autofocus performance to suit photo and video applications. This system also features full-time manual focus override.
• The Water-repellent AquaDura coating has been applied to the front and rear optical surfaces to protect against moisture and other elements.
• Weather-sealed design protects against dust and moisture to benefit work in severe shooting conditions.