Tamron 12-20mm F2.8
Launch MSRP
$1,699- Weight
- 570g
- Filter
- —
- Min focus
- 0.18m
- Max mag.
- 0.17×
- Formula
- 17E / 12G
- Released
- 2026
Specification sheet
Optical construction
- 1x XGM
- 3x GM
- 1x XLD
- 3x LD
- AX Coating
- BBAR-G2 Coating
- Fluorine Coating
- Aperture range
- f/2.8 — f/16
Physical & ergonomics
- Weight
- 570g
- ⌀ × length
- 90.0 × 119.3mm
- Filter
- —
- Weather sealed
- Yes
- Aperture ring
- Yes · de-click
Autofocus actuator
- Stabilisation
- Body IBIS
- Teleconverter
- Not supported
- AF speed score
- 8.6 / 10
Close-up performance
- Min focus distance
- 0.18m
- Max magnification
- 0.17× (1:5.8)
Optical character
Tamron's first 12mm full-frame zoom is a fast, internally zooming ultra-wide aimed at landscape, architecture and astro work. It has a fixed petal hood and a bulbous front element, so it takes rear gel filters instead of screw-in ones. At 570g it is light for a 12-20mm f/2.8, and it costs well under Sony's 12-24mm GM.
The optics include an XGM element, Tamron's large molded asphere, along with three GM, one XLD and three LD elements. The AX coating on the strongly curved front elements is meant to keep flare in check. On Sony E it gets an aperture ring with a click switch and iris lock. There is also a zoom lock for 12mm and 20mm, an MF lock, a custom switch, and a USB-C port for TAMRON Lens Utility. The 12-blade diaphragm gives 12-point sunstars.
Reviewer consensus
Early reviews find centre sharpness strong from f/2.8 across the range. The corners at 12mm improve noticeably by f/4 to f/5.6, which is normal for this class. The VXD motor focuses quickly and quietly, and flare control is good for a lens with such a curved front element. The 12-blade aperture gets frequent mention for its clean, many-pointed sunstars.
The practical criticisms concern the format, not the optics. Without front filters, ND and polariser users need the rear holder or an aftermarket system. Distortion and vignetting at 12mm also depend on in-camera or raw-converter correction. Testing is still limited because the lens has only been on sale since mid-2026.
Owner sentiment
Early owners like the size and weight compared with other 12mm f/2.8 zooms, the 12mm-to-20mm range for travel, and the Sony-version aperture ring and switches. Astro shooters value the MF lock and the f/2.8 aperture at 12mm.
Some see the zoom range as narrow and miss front filters. Others are waiting on longer-term reports on coma and field curvature before replacing older ultra-wides. Only rear gel filters fit, so a polariser is not practical.
Strengths, weaknesses & performance
Strengths
- +12-20mm at constant f/2.8, 570g
- +Aperture ring with click and iris lock (Sony E)
- +12-blade aperture for sunstars
- +Internal zoom, zoom lock and MF lock
- +About $1,699, far below Sony's 12-24 GM
Weaknesses
- −No front filter thread (rear gel holder only)
- −Narrow 12-20mm range
- −Relies on in-camera distortion correction at 12mm
- −Limited long-term test data so far
Six-axis rating
- Sharpness
- 8.6
- Bokeh Rendering
- 7.4
- Autofocus Speed
- 8.6
- Flare Resistance
- 8.2
- Build / Sealing
- 8.6
- Value / Size
- 8.6
Editorial 0–10 ratings synthesised from published reviews.
Technical specifications
| Mount | Sony E (FE) · full frame |
|---|---|
| Focal length | 12–20mm |
| Category | Ultra-Wide |
| Maximum aperture | f/2.8 |
| Minimum aperture | f/16 |
| Construction | 17 elements in 12 groups |
| Special elements | 1x XGM · 3x GM · 1x XLD · 3x LD · AX Coating · BBAR-G2 Coating · Fluorine Coating |
| Aperture blades | 12 |
| Focus type | Autofocus |
|---|---|
| Drive | VXD Linear Motor |
| Minimum focus | 0.18m |
| Max magnification | 0.17× |
| Stabilisation | None (uses body IBIS) |
| Teleconverters | Not supported |
| Weight | 570g |
|---|---|
| Diameter × length | 90.0 × 119.3mm |
| Filter thread | None |
| Weather sealing | Yes |
| Aperture ring | Yes |
| De-clickable aperture | Yes |
| Release year | 2026 |
| Launch MSRP | $1,699 USD |
Sources
Specifications
- tamron.com/global/consumer/lenses/a084/
- tamron.com/global/consumer/lenses/a084/spec.html
- tamron-americas.com/
- bhphotovideo.com/c/product/1986708-REG/tamron_12_20mm_f_2_8_lens_sony.html
- photoreview.com.au/
Similar focal length alternatives
- VS12-20mm F2.8 vs 12-24mm f/5.6 Zoom FF
- VS12-20mm F2.8 vs FE 12-24mm F2.8 GM
- VS12-20mm F2.8 vs FE 12-24mm F4 G
- Laowa
12-24mm f/5.6 Zoom FF
12–24mmF5.6- WT
- 497g
- FLT
- ⌀77mm
- MFD
- 0.15m
- MSRP
- $649
MFRING - SonyG Master
FE 12-24mm F2.8 GM
12–24mmF2.8- WT
- 847g
- FLT
- —
- MFD
- 0.28m
- MSRP
- $3,000
AFWR - SonyG
FE 12-24mm F4 G
12–24mmF4- WT
- 565g
- FLT
- —
- MFD
- 0.28m
- MSRP
- $1,700
AFWR
