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Voigtlander SEPTON 40mm f/2 Aspherical Lens (Sony E)

BH #VO40F2ASPSE • MFR #BA394A
6 reviews
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Voigtlander SEPTON 40mm f/2 Aspherical Lens (Sony E)
Key Features
  • Full-Frame | f/2 to f/16
  • Fast Wide-Angle Prime
  • Manual Focus for Reliable Fine-Focus
  • Minimum Focusing Distance: 11.8"
Compact and durable, the Voigtlander SEPTON 40mm f/2 Aspherical Lens is a fast, wide-to-normal-length prime for mirrorless cameras. An aspherical element is used to reduce spherical aberrations and distortion for impressive clarity and sharpness throughout the aperture range. The lens is also defined by its durable metal barrel, compact pancake design, and bright f/2 maximum aperture, which benefits working with selective focus techniques and also aids working in low-light conditions. Additionally, a 10-blade diaphragm contributes to a pleasing bokeh quality, and the lens's manual focus operation permits working with subjects as close as 11.8" away.
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Voigtlander 40mm f/2.0 Septon Overview

Compact and durable, the Voigtlander SEPTON 40mm f/2 Aspherical Lens is a fast, wide-to-normal-length prime for mirrorless cameras. An aspherical element is used to reduce spherical aberrations and distortion for impressive clarity and sharpness throughout the aperture range. The lens is also defined by its durable metal barrel, compact pancake design, and bright f/2 maximum aperture, which benefits working with selective focus techniques and also aids working in low-light conditions. Additionally, a 10-blade diaphragm contributes to a pleasing bokeh quality, and the lens's manual focus operation permits working with subjects as close as 11.8" away.

Additional Details
  • Electronic contacts relay Exif information to the camera for accurate focus assist functions and metadata recording.
  • Dome-shaped screw-on lens hood preserves compact design.
  • Designed for full-frame mirrorless cameras, this lens is also compatible with APS-C models and provides a 60mm equivalent focal length.

Voigtlander 40mm f/2.0 Septon Specs

Focal Length
40mm
Aperture
Maximum: f/2
Minimum: f/16
Lens Mount
Sony E
Lens Format Coverage
Full-Frame
Angle of View
57.3°
Minimum Focus Distance
11.8" / 0.3 m
Magnification
1:5.3 Macro Reproduction Ratio
0.19x Magnification
Optical Design
7 Elements in 6 Groups
Aperture/Iris Blades
10
Focus Type
Manual Focus
Image Stabilization
Yes
Filter Size
52 mm (Front)
Dimensions
ø: 2.4 x L: 1.2" / ø: 61.7 x L: 30 mm
Weight
0.4 lb / 165 g
Packaging Info
Package Weight
0.83 lb
Box Dimensions (LxWxH)
6.3 x 4.8 x 4.6"

Voigtlander 40mm f/2.0 Septon Reviews

Great Single Lens Option For Nikon

By Kevin
Rated 5 out of 5
Date: 2026-08-02

I usually shoot rangefinders with a single lens, a 50mm. I wanted to make my Nikon ZF as a compact a solution as my rangefinder and this 40mm f/2 is close enough to 50 (I honestly appreciate it's slightly wider field of view even though 35mm always feels to wide for me) and, despite being a larger diameter, it feels compact as the length of the lens has more of an impact on ease of carry. Overall, the setup is light and moderately compact. The included lens hood is a really good solution as it barely adds any length to the lens, which, I do not find to the be the case with most Voigtlander lenses for Nikon / Sony. Vogtlander hood options for M mount lenses tent to far outshine their offerings for other systems, and I'm very pleased this lens is an exception. You can put a filter either before or after the hood. In the pic, the brass ring is a UV filter set between the hood and lens body, so it's pretty much ideal and can slip in a bag with no lens cap and no finger smudges on the filter when you're grabbing the camera. It's sharp enough at f/2 and really sharp by f/2.8. I'm into documentary photography and the Nikon manual focus eye detection / focus confirmation makes it pretty easy to manually focus this lens on moving people . . . though I think a rangefinder is about the fastest way to focus manual lenses with moving subjects, the Nikon system is a close second. One tip, if you turn the Zf to B&W and then put focus peaking to red but only on zoom (an option in the menus), you get a very clean solution. Green box at full screen to show you're in focus, and, if you tap zoom, you'll get focus peaking on the greatly magnified image if you want to quickly refine. . . though not usually necessary. The lens produces images with good sharpness and a bit of character. Vignetting is strong at wider apertures but easily corrected. I don't see a lens profile in Lightroom, so I just made a preset to remove vignetting.

Leaning towards Zeiss

By Omar
Rated 4 out of 5
Date: 2026-05-25

Impressively sharp and contrasty for its size, especially from f/2.8 at portrait distances. Color rendition is notable and the lens has a very crisp, detailed, Zeiss-like rendering with a very high amount of microcontrast (high acuity at mid high spatial frequencies) and saturated colors. That said, the overall rendering is a bit harsh. The out of focus areas can look busy and outlined, the focus falloff is abrupt, and the subject separation can feel more like a cut-out effect than a smooth transition. It's also less sharp with very close or distant subjects and there's a bit of field curvature toward the edges. Some people really like these types of "character" though. Excellent compact build and impressive acuity, but not the smoother, more romantic Voigtlander rendering of the Nokton line.

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