COSINA

NOKTON 21mm F1.4 Aspherical

Enjoy bokeh with a super wide-angle

Features

Amazingly large F1.4 maximum aperture for a 21mm lens. In addition to the dynamic perspective characteristic of a super wide-angle lens, this creative lens expands the range of photographic expression by enabling imaging that utilizes “bokeh” (out-of-focus blur). The lens employs a floating mechanism to maintain excellent imaging quality throughout the focusing range from close distance to infinity.

Main Features

Large maximum aperture for enjoying expression through bokeh

The amazingly large F1.4 maximum aperture for a super wide-angle lens enables a shallow depth of focus at maximum aperture. This is helpful for creative imaging utilizing bokeh.

12-blade aperture diaphragm for beautiful bokeh

The aperture diaphragm is configured with 12 blades to make the aperture opening as circular as possible. This means the out-of-focus areas of images are drawn naturally and point light sources etc. are drawn as soft round bokeh rather than as polygonal shapes.

Outstanding optical performance

The lens employs a floating mechanism to maintain excellent imaging quality throughout the focusing range from close distance to infinity. It also features lens elements with aspherical surfaces to eliminate distortion and lens elements made from anomalous partial dispersion glass to eliminate chromatic aberration.

Rectangular bayonet type lens hood included

A lens hood with a stylish rectangular shape extremely effective at shielding the lens from stray light and a bayonet type mount for ease of attachment and removal is included with the lens. The hood features a design that avoids interference with the distance window of a rangefinder camera.

Minimum focus distance of 0.5 meters

The lens focuses beyond the minimum rangefinder-coupled focus distance of 0.7m all the way down to 0.5m. This feature is especially useful when using the lens on a camera with a live view function.

Manual focus for reliable focusing

Employs a very precisely machined and adjusted all metal helicoid unit lubricated with high quality grease to realize smooth focusing operation with just the right amount of torque. This enables very precise focusing.

Bayonet type VM mount

Uses the VM-mount lens mount compatible with Leica M-mount. Not only can this lens be used on rangefinder-coupled cameras, but design-wise it also balances very nicely when mounted on mirrorless digital cameras with a mount adapter.

Installed with a focus-coupling system

The high-precision rangefinder coupling mechanism enables precise focusing in focus critical situations such as when shooting at or close to maximum aperture.

Imaging circle that covers full frame format

The lens features a generous imaging circle that covers the 35 mm full frame format. Furthermore, its size is extremely compact compared to interchangeable lenses for single-lens reflex cameras.

Specifications

Lens diagram

Focal Length
21mm
Aperture Ratio
1 : 1.4
Minimum Aperture
F16
Lens Construction
11 groups 13 elements
Angle of View
90.3°
Aperture Blade
12
Minimum Focus
0.5m
Rangefinder Coupling
∞~0.7m (It depends on the camera)
Diameter × Length
φ69.5×69.7mm
Filter size
φ62mm
Weight
480g
Hood
With square hood

EAN

Ean Code
EAN 4002451002233

Examples

  • NOKTON 21mm F1.4 Aspherical PHOTO BY Mitsuru Kano
  • NOKTON 21mm F1.4 Aspherical PHOTO BY Mitsuru Kano
  • NOKTON 21mm F1.4 Aspherical PHOTO BY Mitsuru Kano
  • NOKTON 21mm F1.4 Aspherical PHOTO BY Mitsuru Kano
  • NOKTON 21mm F1.4 Aspherical PHOTO BY Mitsuru Kano
Voigtländer NOKTON 21mm F1.4 Aspherical PHOTO BY Mitsuru Kano
Voigtländer NOKTON 21mm F1.4 Aspherical PHOTO BY Mitsuru Kano
Voigtländer NOKTON 21mm F1.4 Aspherical PHOTO BY Mitsuru Kano
Voigtländer NOKTON 21mm F1.4 Aspherical PHOTO BY Mitsuru Kano
Voigtländer NOKTON 21mm F1.4 Aspherical PHOTO BY Mitsuru Kano
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NOKTON 21mm F1.4 Aspherical - 株式会社コシナ