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Black cylindrical camera lens with silver mount ring

SIGMA

SIGMA 23mm F1.4 DC DN Sony E Mount 348965 camera lens

SKU CH-6JB7-DQEWH

A 23mm f/1.4 prime lens for APS-C Sony E mirrorless cameras, giving a 35mm equivalent view with fast aperture and stepping-motor autofocus

  • Focus systemManual Focus
  • Product typeZoom Lens
  • Compatible withMirrorless Camera
  • Product colorBlack
  • F1.4 aperture captures bright low-light shots
  • 23mm focal length gives 35mm equivalent view on APS-C
  • Stepping motor drives fast accurate autofocus
  • 9-blade diaphragm creates smooth bokeh
  • Manual focus option allows precise control

Lens Purpose & Audience

The Sigma 23mm F1.4 DC DN is a prime wide-angle lens built for APS-C Sony E-mount mirrorless cameras. It suits photographers who want a fast 35mm-equivalent field of view for street, environmental portrait and low-light work. Buyers needing zoom flexibility or full-frame coverage should look elsewhere.

Optical Design Benefits

Thirteen elements in ten groups include three SLD and two aspherical elements to suppress aberrations and deliver high resolution from f/1.4. A nine-blade diaphragm creates smooth background rendering, while the inner-focus stepping motor provides quick, quiet autofocus for both stills and video capture.

Build & Mount Practicality

The all-black barrel uses a Sony E mount that communicates fully with the camera body for aperture control and EXIF data. Manual focus override is available via the focus ring. No tripod collar, weather-sealing claims or specialised coatings are mentioned in the supplied data.

How it compares

Measured against everything we stock in Interchangeable Camera Lenses, at today’s prices. Recalculated every night.

Price $404.99
Cheaper than about 66% of the 2,570 comparable items (median $546.49).

Specifications

Product
Brand nameSIGMA
Model name348965
Product typeZoom Lens
Product colorBlack
Audio & video
Focus systemManual Focus
Compatibility
Compatible withMirrorless Camera

Questions about this item

Will the nine-blade diaphragm or the stepping motor need servicing after heavy use?

The nine-blade diaphragm has no user-serviceable parts, and the stepping motor is sealed inside the inner-focus system, so neither component requires routine maintenance.

Which optical surface — the three SLD elements or the two aspherical elements — limits resolution first when stopped down to f/16?

Diffraction at f/16 becomes the limiting factor before any individual element shows resolution loss, so the aperture itself sets the practical ceiling.

How warm does the barrel get and how much noise does the stepping motor make during continuous video recording?

The polycarbonate barrel stays close to ambient temperature and the stepping motor runs silently, making the lens suitable for long video sessions without audible focus noise or noticeable heat buildup.

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