The Voigtlander NOKTON 40mm F1.2 Aspherical is a high-speed manual focus lens optimized for the imaging sensors of Sony mirrorless cameras.
This lens is a manual focus and manual aperture design, but also features electrical contacts that enable the lens settings at image capture to be included in the Exif information of the image data. The lens is installed with a distance encoder to enable support for 5-axis image stabilization on bodies with this feature, by providing distance to subject information used to compensate for camera shake. The aperture ring has click stops in 1/3 steps.
Full frame Sony E-mount with electrical contacts
high performance utilizing aspherical lens surfaces
Optical design optimized for digital imaging sensors
solid and durable all-metal barrel
Installed with aperture click stop switching mechanism for video