Cosina Releases Compact Pancake Lens Bearing the Legendary 'SEPTON' Name for Nikon Z-Mount
Cosina will release the Voigtländer 'SEPTON 40mm F2 Aspherical Z-mount' on April 15, 2026. Priced at 93,500 yen, this manual-focus pancake lens revives a 1950s legend for modern Nikon full-frame mirrorless cameras.
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- 📰 Published: April 15, 2026 at 19:00
- 🔍 Collected: April 15, 2026 at 10:31
- 🤖 AI Analyzed: April 19, 2026 at 13:16 (98h 44m after Collected)
SEPTON 40mm F2 Aspherical Z-mount
Cosina Co., Ltd. (Nakano City, Nagano Prefecture) will release a new product under the Voigtländer brand, which it designs, develops, and manufactures: the "SEPTON 40mm F2 Aspherical Z-mount" interchangeable lens for Nikon Z-mount, available from April 15, 2026.
SEPTON 40mm F2 Aspherical Z-mount
Suggested retail price (tax included) ...... 93,500 yen
JAN 4530076 235168
Release Date: April 15, 2026
Product Page (Cosina Web Page)
[What is SEPTON?]
"SEPTON" is derived from the Latin word "Septem," meaning the number "7," and is characterized by the use of 7 lens elements. SEPTON is the name given to the high-performance standard lenses developed for the Bessamatic and Ultramatic lens-shutter single-lens reflex cameras sold from the late 1950s through the 1960s.
Because many standard lenses of that era adopted a 6-element configuration, adding one more lens could be expected to improve resolution. However, since coating technology was not as advanced as it is today, increasing the number of reflective surfaces carried risks such as degraded color reproduction and ghosting. As a result, many companies did not adopt a 7-element design. Voigtländer deliberately created this 7-element configuration ahead of its time, resulting in one of Voigtländer's legendary lenses that camera fans still remember today as a high-performance optic.
[Product Overview]
This product is a pancake-type standard lens featuring compactness that matches mirrorless cameras. Optimized for full-frame Z-mount sensors (Nikon FX format), it takes the 6-element Orthometar type as a base and adds one aspherical lens to make a 7-element configuration, achieving an F2 brightness while maintaining the Orthometar type's advantage of allowing a compact optical system. As a characteristic of the Orthometar type, distortion is extremely low, making it a lens capable of capturing straight motifs without any perceived bending.
With an overall length from the mount surface of 32mm and a weight of 205g, its compactness reduces the stress of carrying it around and taking it in and out of a bag. The 40mm angle of view, which can also be used as a semi-wide-angle lens, is suitable for a daily-use lens. The focus ring adopts a knurled pattern with deeply cut finger grips despite its compactness and precise machining, combining functionality and design that not only evokes the good old days but also improves the operational feel. The minimum focusing distance is 0.3m, making it highly capable for table photography. It comes with a dome-shaped metal screw-in hood that does not compromise its compactness. The tip of the hood's outer circumference has a φ52mm thread, allowing the front cap to be shared whether the hood is used or not.
Lens configuration diagram
Additionally, it is equipped with electronic contacts. By combining a body that supports telecommunications with the latest firmware, it supports Exif information, in-body image stabilization (3-axis), and three types of focus assist functions (focusing via focus point frame color change, focusing via peaking function, and focusing via enlargement button). The aperture ring features 1/3-stop clicks.
[Main Features of SEPTON 40mm F2 Aspherical Z-mount]
- Nikon Z-mount
- Optical design optimized for digital image sensors
- Compact design with a total length of 32mm
- Dome-shaped metal hood included
- All-metal lens barrel with high rigidity and durability
- Manual focus for reliable focus operation
- Minimum focusing distance of 0.3m
- Full-frame image circle
- Information communication with the body via electronic contacts
SEPTON 40mm F2 Aspherical Z-mount Product Appearance
Included metal dome-shaped hood
[Product Specifications]
Focal Length: 40mm
Aperture Ratio: 1:2
Minimum Aperture: F22
Lens Configuration: 7 elements in 6 groups (1 anomalous partial dispersion glass, 1 aspherical lens)
Angle of View: 57.3°
Number of Aperture Blades: 10
Minimum Focusing Distance: 0.3m
Maximum Magnification: 1:5.3
Maximum Diameter x Overall Length: φ66.3 x 32.0mm
Cosina Co., Ltd. (Nakano City, Nagano Prefecture) will release a new product under the Voigtländer brand, which it designs, develops, and manufactures: the "SEPTON 40mm F2 Aspherical Z-mount" interchangeable lens for Nikon Z-mount, available from April 15, 2026.
SEPTON 40mm F2 Aspherical Z-mount
Suggested retail price (tax included) ...... 93,500 yen
JAN 4530076 235168
Release Date: April 15, 2026
Product Page (Cosina Web Page)
[What is SEPTON?]
"SEPTON" is derived from the Latin word "Septem," meaning the number "7," and is characterized by the use of 7 lens elements. SEPTON is the name given to the high-performance standard lenses developed for the Bessamatic and Ultramatic lens-shutter single-lens reflex cameras sold from the late 1950s through the 1960s.
Because many standard lenses of that era adopted a 6-element configuration, adding one more lens could be expected to improve resolution. However, since coating technology was not as advanced as it is today, increasing the number of reflective surfaces carried risks such as degraded color reproduction and ghosting. As a result, many companies did not adopt a 7-element design. Voigtländer deliberately created this 7-element configuration ahead of its time, resulting in one of Voigtländer's legendary lenses that camera fans still remember today as a high-performance optic.
[Product Overview]
This product is a pancake-type standard lens featuring compactness that matches mirrorless cameras. Optimized for full-frame Z-mount sensors (Nikon FX format), it takes the 6-element Orthometar type as a base and adds one aspherical lens to make a 7-element configuration, achieving an F2 brightness while maintaining the Orthometar type's advantage of allowing a compact optical system. As a characteristic of the Orthometar type, distortion is extremely low, making it a lens capable of capturing straight motifs without any perceived bending.
With an overall length from the mount surface of 32mm and a weight of 205g, its compactness reduces the stress of carrying it around and taking it in and out of a bag. The 40mm angle of view, which can also be used as a semi-wide-angle lens, is suitable for a daily-use lens. The focus ring adopts a knurled pattern with deeply cut finger grips despite its compactness and precise machining, combining functionality and design that not only evokes the good old days but also improves the operational feel. The minimum focusing distance is 0.3m, making it highly capable for table photography. It comes with a dome-shaped metal screw-in hood that does not compromise its compactness. The tip of the hood's outer circumference has a φ52mm thread, allowing the front cap to be shared whether the hood is used or not.
Lens configuration diagram
Additionally, it is equipped with electronic contacts. By combining a body that supports telecommunications with the latest firmware, it supports Exif information, in-body image stabilization (3-axis), and three types of focus assist functions (focusing via focus point frame color change, focusing via peaking function, and focusing via enlargement button). The aperture ring features 1/3-stop clicks.
[Main Features of SEPTON 40mm F2 Aspherical Z-mount]
- Nikon Z-mount
- Optical design optimized for digital image sensors
- Compact design with a total length of 32mm
- Dome-shaped metal hood included
- All-metal lens barrel with high rigidity and durability
- Manual focus for reliable focus operation
- Minimum focusing distance of 0.3m
- Full-frame image circle
- Information communication with the body via electronic contacts
SEPTON 40mm F2 Aspherical Z-mount Product Appearance
Included metal dome-shaped hood
[Product Specifications]
Focal Length: 40mm
Aperture Ratio: 1:2
Minimum Aperture: F22
Lens Configuration: 7 elements in 6 groups (1 anomalous partial dispersion glass, 1 aspherical lens)
Angle of View: 57.3°
Number of Aperture Blades: 10
Minimum Focusing Distance: 0.3m
Maximum Magnification: 1:5.3
Maximum Diameter x Overall Length: φ66.3 x 32.0mm