Leica Summilux-M 21mm f/1.4 Asph

Focal length: 21 mm
Aperture: f/1.4
Weight: 580 g
Filter diameter: –
Min. focus distance: 70 cm
Length: 66 mm

At a Glance

With a 21 mm focal length and a maximum aperture of f/1.4, this wide-angle prime for Leica M covers broad scenes while gathering a lot of light. Focusing is manual only, and the aperture ring has click stops. Close focus ends at 70 cm. It suits landscapes, reportage and night sky work on full frame.

Good for

Landscape
Reportage
Night sky

Worth knowing

No autofocus: focusing is manual only.
Minimum focus distance of 0.7 m: limited for close-ups.

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/1.4
Max. aperture (max. zoom): f/1.4
Min. aperture: f/16
Elements: 10
Groups: 8
Weight: 580 g (1.28 lb)
Filter diameter: –
Min. focus distance: 70 cm (27.56 in)
Max. magnification: 1:29.4 (0.03×)
Length: 66 mm (2.6 in)
Diameter: 69.5 mm (2.74 in)

Manufacturer data: leica-camera.com

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 Leica Summilux-M 21mm f/1.4 Asph fit?

The Leica Summilux-M 21mm f/1.4 Asph 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.