Voigtlander APO-LANTHAR 50mm f/2.0 Aspherical Lens

The APO-LANTHAR 50mm f/2 Aspherical Lens from Voigtlander is a high-end normal-length M-mount prime and is a member of the prestigious APO-LANTHAR family of optically superior, apochromatic lenses. The apochromatic structure minimizes the on-axis chromatic aberration of the RGB light wavelengths that make up the three fundamental colors of light. To nearly eliminate all aberrations and achieve very high sharpness and color accuracy, a number of anomalous partial dispersion and aspherical elements are used. For precise focusing control, a high precision helicoid is used in conjunction with a manual focus design. Additionally, when using the larger apertures, a 12-blade diaphragm creates a lovely circular bokeh from point light sources.

Features

• When used with APS-C format cameras, a normal-length prime made for full-frame M-mount cameras can have a 75mm equivalent focal length.
• Working in low light settings is made easier by the bright f/2 maximum aperture, which also gives selective focus applications greater control over the focus location.
• For greater clarity and color integrity, apochromatic design essentially eliminates color fringing and chromatic aberrations.
• Improved clarity and precise rendering are achieved by limiting spherical aberrations and distortions with two aspherical elements.
• 10 elements, 8 design groups
• High-accuracy all-metal helicoid manual focus design for high-precision control.
• When using shallow depth of field techniques, a 12-blade diaphragm lends to a beautiful out-of-focus look.

Specification

Focal Length : 50mm

Maximum Aperture : f/2

Minimum Aperture : f/16

Lens Mount : Leica M

Lens Format Coverage : Full-Frame

Angle of View : 46.2°

Minimum Focus Distance : 27.6" / 70 cm

Optical Design : 10 Elements in 8 Groups

Diaphragm Blades : 12

Focus Type : Manual Focus

Image Stabilization : No

Filter Size : 49 mm (Front)

Dimensions (ø x L) : 2.2 x 2.1" / 55.6 x 53 mm

Weight : 10.2 oz / 288 g