Skip to content
LensFinder.org
Sony FE 20mm F1.8G

Sony E Autofocus

Sony FE 20mm F1.8G

Focal length
20 mm
Aperture
f/1.8
Weight
373 g
Filter diameter
67 mm
Min. focus distance
18 cm
Length
84.7 mm
Check price on Amazon 1

At a Glance

The 20 mm f/1.8 is a wide-aperture ultra-wide prime for Sony E-mount full frame. The f/1.8 opening shortens shutter times in low light, which helps with night sky work. At 373 g, with an 18 cm minimum focus distance and 1:4.55 magnification, it also suits landscape, architecture and interiors.

Good for

  • Landscape
  • Architecture
  • Interiors
  • Night sky

Derived from the manufacturer data, not from our own tests. How we check

Technical Specifications

Report an error

Is a value wrong or missing for Sony FE 20mm F1.8G? Tell us what is wrong.

Min. focal length
20 mm
Max. focal length
20 mm
Max. aperture (min. zoom)
f/1.8
Max. aperture (max. zoom)
f/1.8
Min. aperture
f/22
Elements
14
Groups
12
Weight
373 g (0.82 lb)
Filter diameter
67 mm
Min. focus distance
18 cm (7.09 in)
Max. magnification
1:4.5 (0.22×)
Length
84.7 mm (3.33 in)
Diameter
73.5 mm (2.89 in)
Released
February 2020

Manufacturer data: sony.de

Last checked: October 13, 2026 (against the manufacturer data) · How we check

Simulate depth of field and angle of view

Compare with other lenses

Which cameras does the Sony FE 20mm F1.8G fit?

The Sony FE 20mm F1.8G is a full-frame lens for Sony E-Mount cameras. On full-frame bodies it uses the whole sensor; on APS-C Sony E-Mount cameras its field of view equals 30 mm in full-frame terms.

Sony E-Mount cameras

Full frame:
Sony A7R VI,Sony A7 V,Sony FX2,Sony A1 II,Sony A9 III,Sony A7C II,Sony A7CR,Sony ZV-E1,Sony A7R V,Sony A7 IV,Sony A1,Sony FX3,Sony A7S III,Sony A7C,Sony FX6,Sony A7R IV (A7R IVA),Sony A9 II,Sony FX9,Sony A7 III,Sony A7R III (A7R IIIA),Sony A9,Sony A7R II,Sony A7S II,Sony A7 II,Sony A7S,Sony A7,Sony A7R
APS-C:
Sony ZV-E10 II,Sony A6700,Sony FX30,Sony ZV-E10,Sony A6600,Sony A6100,Sony A6400,Sony A6500,Sony A6300,Sony QX1 (ILCE-QX1),Sony A6000,Sony A5100,Sony A3500,Sony A5000,Sony A3000,Sony NEX-5T,Sony NEX-3N,Sony NEX-6,Sony NEX-5R,Sony NEX-F3,Sony NEX-7,Sony NEX-5N,Sony NEX-C3,Sony NEX-5,Sony NEX-3

Sony FE 20mm F1.8G compared

Key specs side by side with the most similar Sony E-Mount lenses.

LensSony FE 20mm F1.8GSigma 20mm F2.0 DG DN | ContemporaryTokina Firin 20mm F2 FE AFSigma 20mm F1.4 DG DN Art
Focal length20 mm20 mm20 mm20 mm
Max. aperturef/1.8f/2f/2f/1.4
Weight373 g370 g464 g630 g
Filter diameter67 mm62 mm62 mm82 mm
Min. focus distance18 cm22 cm28 cm23 cm
Length84.7 mm74.4 mm81.5 mm113.2 mm
Autofocusyesyesyesyes
Image stabilizationnononono
Open these lenses in the comparison and add more

Sony FE 20mm F1.8G: FAQ

Does the Sony FE 20mm F1.8G have autofocus?

Yes, the Sony FE 20mm F1.8G has autofocus.

Does the Sony FE 20mm F1.8G have image stabilization?

No, the Sony FE 20mm F1.8G has no stabilization of its own. On cameras with in-body image stabilization (IBIS) the image is still stabilized.

How much does the Sony FE 20mm F1.8G weigh?

The Sony FE 20mm F1.8G weighs 373 g. It is 84.7 mm long with a diameter of 73.5 mm.

What filter size does the Sony FE 20mm F1.8G use?

The Sony FE 20mm F1.8G takes 67 mm screw-in filters.

How close can the Sony FE 20mm F1.8G focus?

The minimum focus distance of the Sony FE 20mm F1.8G is 18 cm, measured from the sensor plane.

Is the Sony FE 20mm F1.8G a full-frame lens?

Yes, the Sony FE 20mm F1.8G covers full frame. On APS-C cameras its field of view equals 30 mm in full-frame terms.

Mastodon