Sony FE 20mm F1.8 G vs Tamron 20mm F2.8 Di III OSD M1:2
Both are Sony E prime lenses for full frame. Here is what actually differs.
Pick the Sony FE 20mm F1.8 G if
- You need 1⅓ stops more light for low light or background blur (f/1.8 vs f/2.8)
- Our notes say it suits: Landscape and astro, interiors, vlogging
Pick the Tamron 20mm F2.8 Di III OSD M1:2 if
- You want the lighter lens to carry: 153 g lighter (220 g vs 373 g)
- You shoot close-ups: it focuses down to 0.11 m vs 0.18 m
- You want bigger close-ups: 0.5× vs 0.22× maximum magnification
- You want a compact lens: 64 mm vs 84.7 mm long
- Our notes say it suits: Street, landscape, close-up details
Spec differences
11 differences| Sony FE 20mm F1.8 G | Tamron 20mm F2.8 Di III OSD M1:2 | |
|---|---|---|
| Brand |
Sony
|
Tamron
|
| Max aperture |
f/1.8
1⅓ stops faster
|
f/2.8
|
| Weight |
373 g
|
220 g
lighter
|
| Length |
84.7 mm
|
64 mm
shorter
|
| Diameter |
73.5 mm
|
73 mm
|
| Min focus distance |
0.18 m
|
0.11 m
closer
|
| Max magnification |
0.22×
|
0.5×
larger
|
| Aperture blades |
not listed
|
7
|
| Optical design |
not listed
|
10 elements / 9 groups
|
| Autofocus motor |
not listed
|
OSD
|
| Weather sealing |
not listed
|
Yes
|
7 identical specs hidden: mount, type, format, focal length, filter thread, image stabilization, released. Show all
- Mount
- Sony E both
- Type
- Prime both
- Format
- Full frame both
- Focal length
- 20mm both
- Filter thread
- 67 mm both
- Image stabilization
- No both
- Released
- 2020 both
Our notes
Sony FE 20mm F1.8 G
A compact wide-angle prime for full-frame E-mount with an f/1.8 aperture and an aperture ring. It weighs about 373 g and suits landscapes, astro and interiors.
Pros
- f/1.8 in a compact body
- Aperture ring
- Close focus to 0.18 m
Cons
- Visible vignetting wide open
- Wide angle exaggerates perspective
Our notes
Tamron 20mm F2.8 Di III OSD M1:2
A small wide-angle prime for Sony full-frame with 1:2 close-up capability. It weighs about 220 g and uses an OSD focus motor.
Pros
- Compact at about 220 g
- Close focusing to 1:2
- 67mm filter thread
Cons
- f/2.8 is slow for low light
- No stabilization
More comparisons
Sony FE 20mm F1.8 G vs Sigma 20mm F2 DG DN | Contemporary 022
⅓ stop faster vs newer (2022)
Tamron 20mm F2.8 Di III OSD M1:2 vs Voigtlander Color-Skopar 20mm f/3.5 SL II
Tamron 20mm F2.8 Di III OSD M1:2: ⅔ stop faster, street
Tamron 20mm F2.8 Di III OSD M1:2 vs Sigma 20mm F2 DG DN | Contemporary 022
150 g lighter vs 1 stop faster
Sony FE 20mm F1.8 G vs Tamron E 20mm F2.8 F050
1⅓ stops faster vs 153 g lighter
Sony FE 20mm F1.8 G vs Voigtlander Color-Skopar 20mm f/3.5 SL II
Sony FE 20mm F1.8 G: 2 stops faster, landscape and astro
Tamron 20mm F2.8 Di III OSD M1:2 vs Viltrox 20mm f/2.8
focuses closer vs 63 g lighter