Name: Sirui Swift 40mm f/2.4 AF Lens (Sony E)
Brand: Sirui
SKU: SW40-E
Price: 667.00 SAR
Availability: InStock

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Sirui Swift 40mm f/2.4 AF Lens (Sony E)

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Brand: Sirui
Model: Lens
SKU: SW40-E

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Sirui Swift 40mm f/2.2 AF Lens

Full-Frame | Sony E | STM Autofocus | 210g

Natural Perspective in a Lightweight Prime

The Sirui Swift 40mm f/2.2 AF Lens combines impressive full-frame optics with a compact, lightweight design, delivering a natural field of view for everyday photography, portraits, and content creation. Designed for Sony E-mount full-frame cameras, it features a 40mm focal length, a bright f/2.2 maximum aperture, and a responsive STM autofocus motor. A 40cm minimum focus distance makes detailed close-ups possible, while the clicked aperture ring, AF/MF switch, customizable function button, and weather-resistant construction enhance everyday usability. Weighing just 210g, it is a practical prime lens for photography, travel, and video production.

40mm Full-Frame f/2.2 STM Autofocus 210g

Overview

The Sirui Swift 40mm f/2.2 is a fast, compact prime lens offering a natural perspective between conventional wide-angle and standard focal lengths.

Its 40mm focal length and 55.9° angle of view deliver balanced framing for portraits, street photography, travel, and everyday scenes.

The bright f/2.2 aperture helps in lower-light conditions and produces attractive background separation, while the advanced optical design provides sharpness, contrast, and natural color.

Smooth STM autofocus and minimal focus breathing make the lens equally useful for vlogging, short films, and other video applications.

Key Features

Full-Frame Coverage

Designed for Sony E full-frame cameras.

Natural 40mm Perspective

Balanced 55.9° angle of view.

Bright f/2.2 Aperture

Low-light flexibility and smooth bokeh.

STM Autofocus

Fast, smooth focusing for photos and video.

40cm Close Focus

Capture detailed close-up compositions.

9-Blade Iris

Pleasing out-of-focus highlights.

Clicked Aperture Ring

Tactile exposure control with Auto mode.

AF/MF Switch

Direct switching between focus modes.

Customizable FN Button

Assign camera-supported functions.

58mm Filter Thread

Attach compatible front filters.

Weather-Resistant Design

Additional dust and moisture protection.

Lightweight 210g Body

Compact and travel-friendly construction.

Natural 40mm Field of View

The 40mm focal length provides a natural-looking perspective with a 55.9° angle of view.

This focal length works particularly well for portraits, street scenes, casual documentary work, and everyday photography.

Focal Length 40mm

Angle of View 55.9°

Format Coverage Full-Frame

Lens Category Prime Lens

Bright f/2.2 Aperture and Smooth Bokeh

The fast f/2.2 maximum aperture provides flexibility when photographing in lower-light environments and helps isolate subjects from the background.

Stop down to f/16 for greater depth of field when more of the scene needs to remain sharp.

The clicked aperture ring provides tactile manual control, while the Auto position supports camera-based aperture adjustment on compatible bodies.

Maximum Aperture f/2.2

Minimum Aperture f/16

Iris Blades 9

Aperture Control Clicked Ring / Auto

Close Focusing Down to 40cm

Focus on subjects as close as 40cm for detailed close-up scenes with attractive background separation.

The lens provides approximately 0.14× magnification, corresponding to a 1:7.3 reproduction ratio.

This close-focus capability is useful for product details, portraits, and everyday scenes, although the lens is not a dedicated 1:1 macro optic.

Minimum Focus Distance 40cm

Maximum Magnification Approx. 0.14×

Reproduction Ratio 1:7.3

Photography Type Close-Up

Advanced Optical Design

The Swift 40mm uses 11 optical elements in 8 groups, including specialized aspherical and ED elements.

These optical components help reduce distortion and chromatic aberrations, improving sharpness, contrast, and natural color reproduction.

The design balances image quality with a lightweight form factor, making it practical for both still photography and motion capture.

Optical Construction 11 Elements in 8 Groups

Special Elements Aspherical / ED

Optical Purpose Reduced Distortion and Aberrations

Rendering Sharpness, Contrast and Natural Color

Smooth and Responsive STM Autofocus

The integrated STM autofocus motor enables fast and smooth focusing for still photography and video recording.

Low focus breathing helps maintain consistent framing during focus transitions, making the lens useful for short films, vlogging, and other video applications.

A dedicated AF/MF switch provides immediate access to autofocus and manual focus modes.

Autofocus Motor STM

Focus Modes AF / MF

Focus Breathing Minimal

Manual Focus Ring Yes

Convenient On-Lens Controls

The Swift 40mm features practical controls for making quick adjustments during shooting.

The lens incorporates a manual focus ring, a clicked aperture ring, a physical AF/MF switch, and a customizable FN function button.

Custom button functions depend on camera compatibility.

Focus Ring Manual

Aperture Ring Clicked / Auto

AF/MF Switch Yes

Function Button Customizable FN

Compact and Lightweight 210g Design

The Swift 40mm measures 69.4mm in diameter and 62.3mm in length, weighing approximately 210g.

Its compact construction makes it an excellent option for travel, handheld shooting, everyday photography, and lightweight video rigs.

Diameter 69.4mm

Length 62.3mm

Weight 210g

Lens Mount Sony E

Weather-Sealed and Dust-Resistant Construction

The lens features weather-resistant sealing designed to offer added protection against dust and moisture while shooting on location.

This provides greater flexibility for outdoor work, provided appropriate care is taken during exposure to difficult weather conditions.

Note: Weather resistance does not make the lens fully waterproof or suitable for submersion.

58mm Front Filter Thread

A 58mm front filter thread allows compatible ND, CPL, and other screw-on photographic filters to be mounted directly.

Filter Diameter 58mm

Filter Thread M58 × 0.75

Filter Position Front

Ideal Applications

Portrait Photography Natural perspective and smooth bokeh.

Street Photography Compact and discreet shooting.

Travel Photography Lightweight 210g design.

Vlogging Smooth STM autofocus and natural framing.

Short Films Low focus breathing and manual controls.

Everyday Photography Versatile 40mm focal length.

Close-Up Shots Focus down to 40cm.

Content Creation Bright aperture and direct lens controls.

Technical Specifications

Brand Sirui

Series Swift

Model Swift 40mm f/2.2 AF

Lens Type Prime Lens

Lens Mount Sony E

Format Coverage Full-Frame

Focal Length 40mm

Maximum Aperture f/2.2

Minimum Aperture f/16

Angle of View 55.9°

Minimum Focus Distance 40cm

Maximum Magnification 0.14×

Reproduction Ratio 1:7.3

Optical Design 11 Elements in 8 Groups

Special Optical Elements Aspherical / ED

Iris Blades 9

Focus Type Autofocus / Manual

Autofocus Motor STM

AF/MF Switch Yes

Function Button Customizable FN

Focus Ring Manual

Aperture Ring Clicked with Auto Setting

Focus Breathing Minimal

Optical Image Stabilization No

Filter Diameter 58mm

Filter Thread M58 × 0.75

Weather Sealing Yes

Diameter 69.4mm

Length 62.3mm

Weight 210g

Package Weight Approx. 538g

Box Dimensions (L × W × H) 15.75 × 13.97 × 13.21cm

What's in the Box

Main Product and Accessories

Sirui Swift 40mm f/2.2 AF Lens

Sony E-Mount Version

The supplied specifications do not include a confirmed accessory packing list. Please verify whether the lens hood and front and rear lens caps are included before publishing a complete box contents list.

Tags: Sirui Swift 40mm , Sirui f/2.2 , Sony E Mount , full-frame lens , 40mm prime lens , autofocus lens , STM motor , lightweight prime lens , 210g lens , 58mm filter , portrait photography , street photography , travel photography , 9-blade iris , aperture ring , customizable FN button , Sirui Swift Series

Sirui Swift 40mm f/2.4 AF Lens (Sony E)