Tamron 70-180mm f/2.8 Di III VXD A056 Specs & DoF

70–180 mm

Focal length

f/2.8

Maximum aperture

34°–14°

Diagonal angle of view (Full frame)

Full frame

Designed for

2.6×

Zoom ratio

Specifications#

Brand: Tamron
Model: 70-180mm f/2.8 Di III VXD A056
Lens type: Telephoto zoom
Focal length: 70–180 mm
Maximum aperture: f/2.8
Image circle: Full frame (36×24 mm)
Mount(s): Sony E-mount
Projection: Rectilinear
Autofocus motor: linear (VXD)
Lensfun correction profile: Yes — distortion/vignetting/TCA

Equivalent focal length on different cameras#

Field of view and depth-of-field equivalence when this lens is used on bodies with different sensor sizes (natively or via an adapter).

Camera format	At 70 mm	At 112 mm	At 180 mm	Equiv. aperture (DoF)
Full frame	70 mm · 34°	112 mm · 22°	180 mm · 14°	f/2.8
APS-C	105 mm · 23°	168 mm · 14°	270 mm · 9°	f/4.2
APS-C (Canon)	112 mm · 22°	179 mm · 14°	288 mm · 9°	f/4.5
Micro Four Thirds	140 mm · 18°	224 mm · 11°	360 mm · 7°	f/5.6

Depth of field & background blur#

Computed on its native Full frame format (CoC 30 µm). “Blur @2 m” is the size of an out-of-focus point at infinity, as a percentage of frame width, with the subject at 2 m — a simple bokeh index. Full table: 85 mm f/2.8 on full frame.

Focal	Aperture	at 1 m	at 2 m	at 5 m	at 10 m	Hyperfocal	Blur @2 m
70 mm	f/2.8	3.2 cm	13.2 cm	85.1 cm	3.51 m	58.4 m	2.5%
70 mm	f/4	4.6 cm	18.9 cm	1.23 m	5.17 m	40.9 m	1.8%
70 mm	f/8	9.1 cm	38.2 cm	2.56 m	12.7 m	20.5 m	0.9%
112 mm	f/2.8	1.2 cm	5.1 cm	32.8 cm	1.33 m	149 m	6.6%
112 mm	f/4	1.7 cm	7.2 cm	46.9 cm	1.91 m	105 m	4.6%
112 mm	f/8	3.4 cm	14.5 cm	94.3 cm	3.92 m	52.4 m	2.3%
180 mm	f/2.8	0.4 cm	1.9 cm	12.5 cm	51.0 cm	386 m	17.7%
180 mm	f/4	0.6 cm	2.7 cm	17.9 cm	72.8 cm	270 m	12.4%
180 mm	f/8	1.2 cm	5.4 cm	35.7 cm	1.46 m	135 m	6.2%

Handheld & night-sky limits#

NPF assumes typical 20–24 MP sensors (≈6 µm pixels on full frame, ≈3.9 µm on APS-C, ≈3.3 µm on Micro Four Thirds).

Body	Min. handheld shutter (longest focal)	500 rule at 70 mm	NPF at 70 mm, f/2.8
Full frame	1/200 s	7 s	4 s
APS-C	1/250 s	5 s	3 s
APS-C (Canon)	1/320 s	4 s	3 s
Micro Four Thirds	1/400 s	4 s	3 s

Compatible cameras#

Bodies in our database with a native Sony E-mount mount.

Adapt it to other systems#

Nikon Z Nikon 1 (CX)Pentax Q

Similar lenses#

Sony FE 70-200mm f/2.8 GM OSS f/2.8
Sony FE 70-200mm f/4 G OSS f/4
Sony FE 70-300mm f/4.5-5.6 G OSS f/4.5–5.6
Sigma 70-200mm F2.8 DG OS HSM | S f/2.8
Sony E 70-350mm f/4.5-6.3 G OSS f/4.5–6.3
Tamron 70-180mm F/2.8 Di III VC VXD G2 f/2.8
Tamron 70-300mm F4.5-6.3 Di III RXD f/4.5–6.3
Sony E 55-210mm f/4.5-6.3 OSS f/4.5–6.3
Sigma 100-400mm F5-6.3 DG OS HSM | C f/5–6.3
Sigma 100-400mm f/5-6.3 DG OS HSM | C +1.4x ext. f/5–6.3
Sony FE 100-400mm f/4.5-5.6 GM OSS f/4.5–5.6
Tamron 150-500mm F5-6.7 Di III VC VXD f/5–6.7

Frequently asked questions#

Is the Tamron 70-180mm f/2.8 Di III VXD A056 full frame?

Yes — it covers the full 36 × 24 mm frame.

What is the Tamron 70-180mm f/2.8 Di III VXD A056 equivalent to on APS-C?

On a 1.5× APS-C body it frames like 105–270 mm, and like 112–288 mm on Canon APS-C.

What is the Tamron 70-180mm f/2.8 Di III VXD A056 good for?

As a telephoto zoom it suits sport, wildlife, events and compressed landscapes.

Sources & licences#

Lensfun lens database — CC BY-SA 3.0