Lens Details
Voigtlander
SEPTON 40mm f/2 Aspherical
$999~
MSRP (prices vary)
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Released: February 20, 2025
Highlights
- Designed for Sony E, a full-frame 40mm f/2 manual-focus standard prime that is a go-to all-rounder.
- The bright f/2 aperture delivers a shallow depth of field and strong low-light performance.
- It is lightweight at 190g, pairing well with Sony E bodies.
Who it's for
The Voigtlander SEPTON 40mm f/2 Aspherical is a 40mm f/2 prime lens — a short-telephoto / portrait option. Here's what it's best at and what to keep in mind.
Best for
- ✓Portraits and low light — a fast f/2 aperture for blurred backgrounds.
Keep in mind
- !Manual focus only — no autofocus.
40mm
Focal Length
f/2
Max Aperture
Full-Frame
Coverage
−
Stabilized
190g
Weight
49mm
Filter
Full Specifications
Optical Design
| Focal Length | 40mm |
|---|---|
| Lens Type | Prime |
| Optical Elements | 9 |
| Optical Groups | 7 |
Aperture & Iris
| Maximum Aperture | f/2 |
|---|---|
| Minimum Aperture | f/16 |
| Aperture Blades | 10 |
| Rounded Aperture | Yes |
Coverage & Angle
| Format Coverage | Full-Frame |
|---|---|
| Lens Mount | Sony E |
| Angle of View | 57° |
| 35mm Equivalent | − |
Focus
| Autofocus | No |
|---|---|
| Focus Motor | − |
| Focus Limiter | No |
| AF/MF Switch | No |
| Min Focus Distance | 40 cm |
| Max Magnification | 0.15x |
Stabilization & Video
| Optical Stabilization | No |
|---|---|
| Aperture Ring | No |
| Declickable Aperture | No |
| Parfocal | No |
| Internal Zoom | No |
General
| Price (MSRP) | $999 |
|---|---|
| Filter Size | 49mm |
| Diameter | 61.5mm |
| Length | 56.3mm |
| Weight | 190g (6.7 oz) |
| Weather Sealed | No |
| Tripod Collar | No |
