Voigtlaender NOKTON 21mm F1.4 Aspherical E-mount Lens

The NOKTON 21mm F1.4 Aspherical E-mount is a large maximum aperture manual focus lens optimized for the imaging sensors of Sony mirrorless cameras.
The 21mm focal length covers an angle of 91 ° which is about 10 ° wider than a 24/25mm focal length to create a super dynamic perspective.
Generally, the wider a lens gets the deeper the depth of focus of the lens, but with the NOKTON 21mm F1.4 Aspherical E-mount lens, the extremely large maximum aperture for a super wide-angle lens enables imaging that utilizes “bokeh” (out-of-focus blur). The minimum focusing distance of 25cm can be used to emphasize the thin depth of focus in the close range. The lens utilizes a floating mechanism to maintain excellent imaging quality throughout the focusing range from close distance to infinity. Furthermore, the lens features aspherical optics to eliminate distortion and chromatic aberrations in addition to enabling a compact optical design despite the large maximum aperture. The aperture ring has click stops in 1/3 steps. The lens also features a click stop switching mechanism that enables the click stops to be turned off when shooting video. The included petal Hood can be attached/removed easily for hassle-free filter work, and can be attached in reverse for easy storage. Technical specifications
Art-Nr.:106184 Focal length 21 mm Aperture ratio 1:1,4 Minimum aperture (F) 16 selective aperture control available Lens construction 13 elements in 11 groups Angle of view 90,8 ° Aperture blade 12 Minimum focus 0,25 m Maximum reproduction ratio Maximum diameter 70,5 mm Length 79,5 mm Mount E Electrical contact: Exif data transfer available Manual focus assistant available Weight 560 g Filter size 62 mm Color black Others removable Lens shade included Optional –