Cameras Ranked

20 Sony E 20mm F2.8

The Sony E 20mm F2.8 is a prime lens for Sony E-mount (APS-C) that covers 20 mm at f/2.8, weighs 69 g and focuses as close as 0.2 m. Lightest (69 g), widest view (20 mm), dimmest (f/2.8) and shortest reach (20 mm) of the 3 APS-C Sony E-mount prime lenses in its focal range. Among them, it suits you if you carry it all day or travel light, or you want a wider view at the short end. If you shoot in low light or want a blurrier background, or you want more reach at the long end, every other one that does better on brightness, or reach gives up weight and width.

  • f/2.8widest aperture
  • 69 gweight
  • 51bodies it fits
To one scale. Sony E 20mm F2.8: length 20.4 mm, diameter 62.6 mm, filter thread 49 mm.20.4 mmø62.6
To scale from the maker's length and diameter, the mount on the left and the filter thread in yellow at the front. The rings are drawn, not measured.

Compare it with another lensAll Sony E-mount lenses

To one scale. Sony E 20mm F2.8: length 20.4 mm, diameter 62.6 mm, filter thread 49 mm.20.4 mmø62.6
To scale from the maker's length and diameter, the mount on the left and the filter thread in yellow at the front. The rings are drawn, not measured.

Where it sits

3 lenses

APS-C Sony E-mount prime lenses in its focal range that state each value, this one included. Each tick is one; the thick one is this one.

Bodies it fits

51 bodies

All cameras, by maker and mount

Specifications

Focal length
20 mm1
Widest aperture
f/2.81
Closest focus
0.2 m2
Maximum magnification
0.12x2
Stabilization
No
Mount
Sony E-mount2
Covers
APS-C
Type
Prime
Weight
69 g2
Length
20.4 mm2
Diameter
62.6 mm2
Filter thread
49 mm2
Elements
62
Groups
62
Aperture blades
72
Hood
ALC-SH1132

Sources

  1. Wikidata, checked Oct 9, 2026 (CC0 1.0)
  2. Sony Japan lens specifications (sony.jp), checked Oct 6, 2026

Worked out by code, not stated by a source

  • Focal length and widest aperture as the lens's own name states them.
  • Read from the lens name: each maker marks the sensor size a lens covers (Sony FE/E, Canon RF/RF-S, Nikon DX, Tamron Di III/Di III-A, Sigma DG/DC); every Fujifilm X lens is APS-C and every Micro Four Thirds lens is Four Thirds.
  • Read from the lens name: Sony marks optically stabilized lenses OSS, Canon IS, Nikon VR, Fujifilm OIS, Panasonic O.I.S., Tamron VC and Sigma OS; a lens from these makers without the mark has no optical stabilization.
  • Prime or zoom, read from the focal length in the lens name.

Each value is checked automatically against the source it links, on the date shown. How we build these pages

† The makers' own tables, row by row, with labels in our plain words (translated where the maker's page isn't in English); each row's numbers are checked against the page it links.

Full specifications†

Show all 21 rows
Full specificationsSony E 20mm F2.82
Product nameE 20mm F2.8
Model numberSEL20F28
Lens mountSony E mount
Compatible sensor sizeAPS-C format only
Focal length20 mm
Equivalent focal length30 mm (APS-C sensor)
Lens construction6-6
Angle of view70° (APS-C)
Maximum aperture2.8
Minimum aperture16
Diaphragm blades7
Circular diaphragmyes
Minimum focusing distance0.2 m
Maximum magnification ratio0.12
Filter size49 mm
Hood typeCap type
Dimensions62.6 x 20.4 mm
Weight69 g
Included hood modelALC-SH113
Included front capyes
Included rear capyes

How the pick works

  1. Widest aperture3

    Lower wins once they are 0.3 apart.

  2. Weight2

    Lower wins from a 12% gap.

  3. Focal length (longest)2

    Higher wins from a 15% gap.

  4. Focal length (widest)2

    Lower wins once they are 2 mm apart.

  5. Optical stabilization1

    Having it wins.

  6. Closest focus, wide end1

    Lower wins from a 15% gap. Compared only between lenses of the same focal length (widest).

  7. Filter thread0.5

    Lower wins once they are 5 mm apart.

  8. Lead for a pick1

Our pick or our take adds up the importance of each real difference, with these importances and thresholds: a gap smaller than its row's threshold is too close to call and counts as the same. They are our editorial choice, not a measurement, the same on every page, and they never read prices, sales or who sells it.

Paid placements0

How we rank, in full