COSINA

NOKTON 21mm F1.4 Aspherical

Super wide-angle lens for enjoying expression through bokeh

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

For Sony E-mount

The lens has electronic contacts to ensure that lens usage data is included in the Exif data of captured images. Furthermore, the built-in distance encoder enables support for 5-axis image stabilization on the body side. Other features include being able to magnify the finder display by operating the focus ring.

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.

Optimized optical design

Provides an imaging circle that covers the 35 mm full frame format and utilizes an optical design optimized for Sony E-mount sensors. High resolution is maintained up to the image periphery and color shifts are well controlled.

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.

Minimum focus distance of 0.25 meters

The minimum image capturing distance from the subject to the imaging surface is 25cm. This lens enables imaging that emphasizes the strong perspective characteristic of a super wide-angle lenses together with a shallow depth of focus.

Aperture click-stop switching mechanism

The aperture click-stop switching mechanism enables the aperture mechanism to be steplessly stopped down/opened up with no click-stop sound. This ensures that the sound of the aperture ring being operated is not recorded while capturing video and also enables a high level of depth of focus control by fine-tuning the aperture ring.

Specifications

Lens diagram

Focal Length
21mm
Aperture Ratio
1 : 1.4
Minimum Aperture
F16
Lens Construction
Construction: 11 groups 13 elements
Angle of View
90.8°
Aperture Blade
12
Minimum Focus
0.25m
Maximum reproduction ratio
1: 7.5
Diameter x Length
φ70.5×79.5mm
Filter Size
φ62mm
Weight
560g
Electric Contact
Available
Manual Focus Assist
Available
Exif Data
Available
Auto Lens Correction
Possible
5-Axis Image Stabilization
Possible (only on camera body with 5-Axis Image Stabilization)

EAN

Ean Code
EAN 4002451001694

Examples

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