LUMIX S 40mm F2 (S-S40) L-Mount Lens

S-S40

LUMIX S 40MM F2

The LUMIX S 40mm F2 is a compact, full frame prime lens designed for photographers and video creators who value natural perspective and expressive image quality. Featuring a versatile 40mm focal length and a bright F2 aperture, this L-Mount lens delivers beautiful background bokeh, excellent low light performance, and professional grade results in a lightweight, travel friendly design.

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S-S40

Features

Excellent operability for comfortable shooting

Customisable Focus Ring

The focus ring can also be used as a control ring, allowing you to assign key functions such as Crop Zoom* for zoom-like control even with a fixed focal length lens.

*Compatible with the DC-S1M2/S1M2ES/S1RM2/S5M2/S5M2X/S9 (As of April 2026). Applicable firmware versions: S1RM2 Ver.1.2 or later, S5M2 Ver.3.4 or later, S5M2X Ver.2.4 or later, S9 Ver.1.6 or later.

Focus Button (Fn Button)

The focus button on the lens barrel lets you lock focus while it is pressed. It can also be assigned as an Fn button to your preferred function, enabling comfortable operation that matches your shooting style.

Make Everyday Scenes Your Own

A fixed focal length lens encourages intentional composition and creative movement. The LUMIX S 40mm F2 offers a natural viewing angle, delivering immersive framing, smooth bokeh and expressive depth. Compact and lightweight, it is ideal for everyday carry and travel.

Photo by Gavin Hardy, S1RII, S 40 F2, 40mm, 1/2500sec, F2.5, ISO800

Natural 40mm Perspective & Bright F2 Aperture

The 40mm focal length closely matches the human field of view, making framing natural and intuitive. Combined with the bright F2 aperture, the lens enables subject isolation, faster shutter speeds, and excellent low light performance across street photography, portraits, landscapes, and interiors.

Photo by Gavin Hardy, S1RII, S 40 F2, 40mm, 1/320sec, F2.0, ISO640

Beautiful bokeh and rich creative expression

Experience the impressive bokeh and rich creative expression unique to a fixed focal length lens. Create portraits and familiar scenes with soft background bokeh, or capture night scenes that render the sparkle of streetlights beautifully. One lens, many styles. With the closest focusing distance of 30cm, it is suitable for tabletop photography, from small objects and food to seasonal flowers, making it a versatile choice for everyday shooting.

Photo by Gavin Hardy, S1RII, S 40 F2, 40mm, 1/1000sec, F2.0, ISO250

Easy-to-carry full-frame system

Compact, Lightweight Full Frame

Measuring approximately 40.9mm in length and weighing just 144g, the LUMIX S 40mm F2 is among the most compact L-Mount full frame prime lenses. When paired with LUMIX S Series cameras, it creates an agile system ideal for daily shooting and travel.

Two Colour Options

Available in black or silver finishes, the lens is designed to visually match your camera body and reflect your personal shooting style.

S-S40 comes in black and silver finishes

Dust, Splash & Freeze Resistant Construction

Designed for unpredictable environments, the lens features dust and splash resistant sealing and reliable operation down to –10°C when paired with a compatible LUMIX camera body. A fluorine coated front element helps repel water, oil, and dirt for easy maintenance.

Illustration of the dust- and splash-resistant sealing structure

Direction of Ring Rotation

You can change the rotation direction of the focus ring to match your preferred operating style.*

*Compatible with the DC-S1RM2, DC-S1M2 and DC-S1M2ES. Please update the DC-S1RM2 to firmware version 1.2.

Non-Linear Mode

The focus ring supports both linear and non-linear modes. In non-linear mode, the amount of focus shift varies depending on how fast you turn the ring, allowing for quick and flexible adjustments.

Linear Mode

In linear mode, focus shifts at a consistent, user-defined rate, providing precise, mechanical-feel control that is especially useful for reliable and accurate focusing during video shooting.

Other features

An inner focusing system driven by a stepping motor delivers fast, precise, and quiet autofocus. With AF control at up to 240 fps when working with the camera body, it enables fast focusing and smoothly tracks moving subjects across a wide range of photo and video shooting situations.

Advanced optical design and an optimised internal barrel structure effectively suppress focus breathing. In high-contrast scenes, micro-step aperture control enables smooth F-stop transitions, preventing sudden exposure changes.

Consideration for the environment and green initiatives

LUMIX is taking steps to become more eco-conscious. We have reduced the number of packaging components by 33%, and the use of plastic materials by 85% compared to the previous model. Furthermore, to reduce environmental impact, we have adopted corrugated cardboard cushioning materials in our packaging.

High resolution and excellent rendering performance

LUMIX S 40mm F2 lens construction

The optimised configuration has 7 elements in 6 groups, including 3 ASPH lenses to effectively suppress spherical aberration and ensure superb resolution, despite its compact, lightweight design.

LUMIX S 40mm F2 MTF chart

Offering outstanding sharpness and resolution from the centre to the edges of the frame, this compact, lightweight lens delivers uncompromising image quality.

･For lenses that are capable of compensating distortion, the horizontal axis shows the distance from the centre of the corrected image.