@ 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 gbokehh (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.
¡ Full frame Sony E-mount with electrical contacts
¡ Enhanced high performance utilizing aspherical lens surfaces
¡ Optical design optimized for digital imaging sensors
¡ Extremely solid and durable all-metal barrel
¡ Manual focus for precise focusing
¡ Installed with aperture click stop switching mechanism for video
¡ Minimum focus distance of 25cm