Sony E lens
Sigma 20mm F1.4 DG DN Art
20 mm, f/1.4, made for full frame. It mounts natively on 8 of our APS-C cameras; on the a6400 it frames like 30 mm.
- 20 mm · 30 mm equiv. on a6400
- f/1.4
- 82 mm filter
- 630 g
- Weather-sealed
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On your camera
The view, the weight with the camera (battery and card included) and what the maker says about each pair. Sigma publishes the cameras this lens supports and its firmware updates on its own site. It is made for full-frame sensors and covers APS-C with room to spare.
| Camera | View (35 mm equiv.) | Weight with camera | Fit and maker's notes | Kit |
|---|---|---|---|---|
| Sony a6000 | 30 mm | 974 g | Fits and works
Sigma's note on this pair
| |
| Sony a6100 | 30 mm | 1,026 g | Fits and works
| |
| Sony a6400 | 30 mm | 1,033 g | Fits and works
| |
| Sony a6600 | 30 mm | 1,133 g | Fits and works | |
| Sony a6700 | 30 mm | 1,123 g | Fits and works | |
| Sony ZV-E10 | 30 mm | 973 g | Fits and works
| |
| Sony ZV-E10 II | 30 mm | 1,007 g | Fits and works
| |
| Sony FX30 | 30 mm | 1,276 g | Fits and works |
Sigma's latest firmware for this lens: version 03, published 25 Jun 2026 (as of 4 Nov 2026). Each linked page says how to install it.
What it frames
From 3 m back it takes in a scene about 3.5 × 2.3 m on the a6400: about 7 people standing shoulder to shoulder.
At its closest (23 cm from the sensor) a subject about 15 cm wide fills the frame of the a6400.
On the a6400, to scale
Other standard primes for Sony E
The nearest in focal length, and what each changes against the 20mm F1.4 DG DN Art. Specifications only: we have not compared their pictures.
- Sony E 20mm F2.830 mm equiv. · f/2.8 · 69 g · 49 mm2 stops darker, 561 g lighter, made for APS-C, not weather-sealedCompare
- Sony FE 20mm F1.8 G30 mm equiv. · f/1.8 · 373 g · 67 mm0.7 stop darker, 257 g lighterCompare
- Sigma 20mm F2 DG DN Contemporary30 mm equiv. · f/2 · 370 g · 62 mm1 stop darker, 260 g lighterCompare
- Viltrox AF 20mm F2.830 mm equiv. · f/2.8 · 157 g · 52 mm2 stops darker, 473 g lighter, not weather-sealedCompare
- Sirui Swift 20mm F2.430 mm equiv. · f/2.4 · 207 g · 58 mm1.6 stops darker, 423 g lighterCompare
- Sigma 23mm F1.4 DC DN Contemporary35 mm equiv. · f/1.4 · 330 g · 52 mm300 g lighter, made for APS-CCompare
Questions about this lens
Which cameras does the Sigma 20mm F1.4 DG DN Art fit?
8 APS-C cameras in our catalogue: a6000, a6100, a6400, a6600, a6700, ZV-E10, ZV-E10 II, FX30. It is made for full frame, so it also fits the full-frame cameras on its mount.
What does it frame like on APS-C?
20 mm frames like 30 mm on the a6400 (1.5x).
What filter size does it take?
82 mm screw-in filters. Every lens with a 82 mm thread.
Where these facts come from
Facts from the makers' specification pages. How we check
Size, weight, filter thread, close focus and magnification are Sigma's published figures. Source: Sigma's specification page. We have not tested this lens; for image quality, read reviews from people who have.
Specifications
- Mount
- Sony E
- Made for
- Full-frame sensors (covers APS-C too)
- Focal length
- 20 mm
- Maximum aperture
- f/1.4
- Lens stabilisation
- No
- Weather sealing
- Yes, per the maker
- Filter thread
- 82 mm
- Weight
- 630 g
- Size (diameter × length)
- 87.8 × 113.2 mm
- Closest focus
- 23 cm
- Maximum magnification
- 0.16x
- Autofocus
- Yes
- Announced
- 2022
- Latest lens firmware
- Version 03, published 25 Jun 2026 (as of 4 Nov 2026)