Voigtlander 21mm F1.8 Ultron

Focal length: 21 mm
Aperture: f/1.8
Weight: 412 g
Filter diameter: 58 mm
Min. focus distance: 50 cm
Length: 78.4 mm

At a Glance

An aperture of f/1.8 at 21 mm defines this wide-angle prime for Leica M-mount on full frame. It allows shorter shutter times in dim light and a shallower depth of field than slower wide-angles. The lens weighs 412 g, uses 13 elements in 11 groups and is focused manually. It suits landscapes, reportage and night sky photography.

Good for

Landscape
Reportage
Night sky

Worth knowing

No autofocus: focusing is manual only.

Derived from the manufacturer data, not from our own tests. How we check

Technical Specifications

Min. focal length: 21 mm
Max. focal length: 21 mm
Max. aperture (min. zoom): f/1.8
Max. aperture (max. zoom): f/1.8
Min. aperture: f/22
Elements: 13
Groups: 11
Weight: 412 g (0.91 lb)
Filter diameter: 58 mm
Min. focus distance: 50 cm (19.69 in)
Length: 78.4 mm (3.09 in)
Diameter: 69 mm (2.72 in)
Released: December 2012

Manufacturer data: voigtlaender.de, cosina.co.jp

Last checked: October 13, 2026 (against the manufacturer data) · How we check

Simulate depth of field and angle of view

Compare with other lenses

Which cameras does the Voigtlander 21mm F1.8 Ultron fit?

The Voigtlander 21mm F1.8 Ultron is a full-frame lens for Leica M-Mount cameras. On full-frame bodies it uses the whole sensor; on APS-C Leica M-Mount cameras its field of view equals 32 mm in full-frame terms.

Leica M-Mount cameras

Full frame:: Leica M EV1,Pixii Max,Leica M11-D,Leica M11-P,Leica M11 Monochrom,Leica M11,Leica M10-R,Leica M10 Monochrom,Leica M-E (Typ 240),Leica M10-P,Leica M10-D,Leica M10,Leica M-D (Typ 262),Leica M (Typ 262),Leica M Monochrom (Typ 246),Leica M Edition 60,Leica M-P (Typ 240),Leica M (Typ 240),Leica M-E (Typ 220),Leica M Monochrom (Typ 230),Leica M9-P,Leica M9
APS-C:: Pixii+ (A2572+),Pixii (A2572),Pixii (A1571),Pixii (A1112)

With the Leica M-Adapter L the lens can also be used on Leica L-Mount cameras.