Sony E lens
Sony FE 20mm F1.8 G
20 mm, f/1.8, 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/1.8
- 67 mm filter
- 373 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. It is made for full-frame sensors and covers APS-C with room to spare.
| Camera | View (35 mm equiv.) | With the camera | Fit and maker's notes | Kit |
|---|---|---|---|---|
| Sony a6000 | 30 mm | 717 g | Fits and worksNative mount: it fits and works.
| |
| Sony a6100 | 30 mm | 769 g | Fits and worksNative mount: it fits and works.
| |
| Sony a6400 | 30 mm | 776 g | Fits and worksNative mount: it fits and works.
| |
| Sony a6600 | 30 mm | 876 g | Fits: fully compatible per Sony Sony lists this pair as fully compatible. Sony's page for this pair | |
| Sony a6700 | 30 mm | 866 g | Fits: fully compatible per Sony Sony lists this pair as fully compatible. Sony's page for this pair | |
| Sony ZV-E10 | 30 mm | 716 g | Fits and worksNative mount: it fits and works.
| |
| Sony ZV-E10 II | 30 mm | 750 g | Fits and worksNative mount: it fits and works.
| |
| Sony FX30 | 30 mm | 1,019 g | Fits: fully compatible per Sony Sony lists this pair as fully compatible. Sony's page for this pair |
What it frames
At its closest (18 cm from the sensor) it fills the frame of the a6400 with a subject about 11 cm wide.
On the a6400, to scale
Other standard primes for Sony E
The nearest in focal length, with the numbers that differ.
- Sony E 20mm F2.830 mm equiv. · f/2.8 · 69 g (−304 g) · 49 mmCompare
- Sigma 20mm F2 DG DN Contemporary30 mm equiv. · f/2 · 370 g (−3 g) · 62 mmCompare
- Viltrox AF 20mm F2.830 mm equiv. · f/2.8 · 157 g (−216 g) · 52 mmCompare
- Sigma 23mm F1.4 DC DN Contemporary35 mm equiv. · f/1.4 · 330 g (−43 g) · 52 mmCompare
- Tokina atx-m 23mm F1.435 mm equiv. · f/1.4 · 276 g (−97 g) · 52 mmCompare
- Viltrox AF 23mm F1.435 mm equiv. · f/1.4 · 260 g (−113 g) · 52 mmCompare
Questions about this lens
Which cameras does the Sony FE 20mm F1.8 G 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?
67 mm screw-in filters. Every lens with a 67 mm thread.
Where these facts come from
Facts checked 9 Oct 2026 against the makers' specification pages. How we check
Size, weight, filter thread, close focus and magnification are Sony's published figures. 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/1.8
- Lens stabilisation
- No
- Weather sealing
- Yes, per the maker
- Filter thread
- 67 mm
- Weight
- 373 g
- Size (diameter × length)
- 73.5 × 84.7 mm
- Closest focus
- 18 cm
- Maximum magnification
- 0.22x
- Autofocus
- Yes
- Announced
- 2020
- Model number
- SEL20F18G