Panasonic Lumix S 40mm F2

Focal length: 40 mm
Aperture: f/2
Weight: 144 g
Filter diameter: 62 mm
Min. focus distance: 30 cm
Length: 40.9 mm

Overview

The Panasonic Lumix S 40mm F2 is a compact standard prime for L-Mount cameras with a full frame sensor. Panasonic announced it in April 2026, with shipping expected from early June 2026. It is meant for travel, street and everyday photography where a small, light and bright lens is wanted.

Optical design

The lens has 7 elements in 6 groups, three of which are aspherical. The diaphragm has 7 blades and forms a circular opening, closing down to f/22. The diagonal angle of view is 57 degrees. The front element has a fluorine coating that Panasonic says makes it easier to remove dirt and oil.

Autofocus and handling

Autofocus is driven by a stepper motor. Panasonic says the design suppresses focus breathing for video. There is a control ring, which can also act as the focus ring, and a function button on the barrel. The minimum focus distance is 0.30 m with a maximum magnification of 0.17x. Panasonic lists no stabilizer in the lens, so stabilization depends on the camera body.

Build and size

At about 144 g, 69.4 mm in diameter and 40.9 mm in length, it is a very small L-Mount lens. The filter thread is 62 mm. Panasonic lists a dust-resistant, splash-resistant and freeze-resistant design, with operation rated down to -10 degrees Celsius. Both caps are supplied.

Where it fits

Among the L-Mount primes in our database, nearby options are the Panasonic Lumix S 35mm F1.8, the Panasonic Lumix S 50mm F1.8 and the Sigma 35mm F2 DG DN. The Sigma 45mm F2.8 DG DN Contemporary is a more compact alternative with a slower aperture. The Panasonic Lumix S 20mm F2.5 is a sibling with the same length and filter size.

Pros and cons

Pros

Very light at about 144 g and only 40.9 mm long
f/2 maximum aperture
Dust, splash and freeze resistance, according to Panasonic
Control ring and function button
Focus breathing suppression for video

Cons

No lens stabilizer
Maximum magnification of 0.17x
Only 7 diaphragm blades

Verdict

A small, bright 40 mm for L-Mount users who want to carry a lens that hardly changes the size of the camera. It is a lens for daily use more than for specialized work.

Technical Specifications

min focal length: 40 mm
max focal length: 40 mm
max f (min zoom): f/2
max f (max zoom): f/2
min. aperture: f/22
Elements: 7
Groups: 6
Weight: 144 g (0.32 lb)
Filter diameter: 62 mm
min focus distance: 30 cm (11.81 in)
Length: 40.9 mm (1.61 in)
Diameter: 69.4 mm (2.73 in)

Simulate depth of field and angle of view

Which cameras does the Panasonic Lumix S 40mm F2 fit?

The Panasonic Lumix S 40mm F2 is a full-frame lens for L-Mount cameras. On full-frame bodies it uses the whole sensor; on APS-C L-Mount cameras its field of view equals 60 mm in full-frame terms.

L-Mount cameras

Full frame:: Leica SL3-P, Leica SL3-S, Sigma BF, Panasonic Lumix S1II, Panasonic Lumix S1IIE, Panasonic Lumix S1RII, Leica SL3, Panasonic Lumix S9, Blackmagic PYXIS 6K, Panasonic Lumix S5II, Panasonic Lumix S5IIX, Blackmagic Cinema Camera 6K, Panasonic Lumix BS1H, Leica SL2-S, Panasonic Lumix S5, Sigma fp L, Leica SL2, Panasonic Lumix S1, Panasonic Lumix S1R, Panasonic Lumix S1H, Sigma fp, Leica SL (Typ 601)
APS-C:: Leica CL, Leica TL2, Leica TL, Leica T (Typ 701)