§ 03 Head to head

Sigma 28-70mm F2.8 DG DN | Contemporary vs Tamron 28-75 mm f/2.8 Di III RXD

Sigma 28–70mm f/2.8 is 80 g lighter. Tamron 28–75mm f/2.8 has a longer reach.

The Sigma 28-70mm F2.8 DG DN | Contemporary is a 28–70mm f/2.8 zoom, and the Tamron 28-75 mm f/2.8 Di III RXD is a 28–75mm f/2.8 zoom. On paper the Sigma 28-70mm F2.8 DG DN | Contemporary comes out ahead, 2 advantages to 1, but which one suits you depends on what you shoot.

01

Key differences

From manufacturer specifications

Why is the Sigma 28-70mm F2.8 DG DN | Contemporary better than the Tamron 28-75 mm f/2.8 Di III RXD?

  • 80 g lighter (470 g vs 550 g)
  • 16 mm shorter (101.5 mm vs 117.8 mm long)

Why is the Tamron 28-75 mm f/2.8 Di III RXD better than the Sigma 28-70mm F2.8 DG DN | Contemporary?

  • Longer reach (75mm vs 70mm)
02

Which should you buy?

By use
  • street For street photography, the Sigma 28-70mm F2.8 DG DN | Contemporary has the edge: it is 80 g lighter to carry.
  • travel For travel, the Sigma 28-70mm F2.8 DG DN | Contemporary has the edge: it is 80 g lighter to carry.
03

Specification

18 rows · better value flagged ◆
SpecificationSigma 28-70mm F2.8 DG DN | ContemporaryTamron 28-75 mm f/2.8 Di III RXD
Focal length28–70mm 28–75mm
Maximum aperturef/2.8 f/2.8
Minimum aperturef/22 f/22
Lens typeStandard zoom lens Zoom lens
FormatFull Frame Full frame
Weight470 g (1.04 lbs) ◆550 g (19.40 oz)
Dimensions72.2 mm (diameter) x 101.5 mm (length) 117.8 x 73 mm
Minimum focusing distance0.19 m (7.5 in) at wide end 0.19 m (7.48 inches)
Maximum magnification0.3x —
Image stabilizationNo No
Weather sealingYes (dust and splash resistant) Yes
Aperture ringNo No
Aperture blades9 (rounded) 9
Optical construction16 elements in 12 groups 15 elements / 12 groups
Filter size67 mm 67 mm
Lens mountSony E, L-Mount Sony E
Released—2018
Price—$799 launch price
04

Size

Drawn to relative scale
  • A · Sigma
  • B · Tamron
  • 101.5 × 72.2 mm
  • 117.8 × 73 mm

The Tamron 28-75 mm f/2.8 Di III RXD is 16 mm longer and 80 g heavier than the Sigma 28-70mm F2.8 DG DN | Contemporary.

05

Sample frames

Shot on each lens

Sigma 28-70mm F2.8 DG DN | Contemporary

Himeji Castle
Himeji Castle by rodliam
A7C09483
A7C09483 by citxaqac66
Old and Bling/Alt und Blind
Old and Bling/Alt und Blind by wulffranzen
Gothic avlive/lebende Gothic
Gothic avlive/lebende Gothic by wulffranzen

Tamron 28-75 mm f/2.8 Di III RXD

CSFA_SonyA1ii_20261003_08734.jpg
CSFA_SonyA1ii_20261003_08734.jpg by mr1492
CSFA_SonyA1ii_20261003_08716.jpg
CSFA_SonyA1ii_20261003_08716.jpg by mr1492
CSFA_SonyA1ii_20261003_08689.jpg
CSFA_SonyA1ii_20261003_08689.jpg by mr1492
CSFA_SonyA1ii_20261003_08677.jpg
CSFA_SonyA1ii_20261003_08677.jpg by mr1492
06

Video reviews

4 on YouTube
Video thumbnail for Sigma 28-70mm F2.8 DG DN | Contemporary review 1
Video thumbnail for Sigma 28-70mm F2.8 DG DN | Contemporary review 2
Video thumbnail for Tamron 28-75 mm f/2.8 Di III RXD review 1
Video thumbnail for Tamron 28-75 mm f/2.8 Di III RXD review 2
07

Questions

Which is lighter, the Sigma 28-70mm F2.8 DG DN | Contemporary or the Tamron 28-75 mm f/2.8 Di III RXD?
The Sigma 28-70mm F2.8 DG DN | Contemporary weighs 470 g, 80 g less than the Tamron 28-75 mm f/2.8 Di III RXD (550 g).
Do the Sigma 28-70mm F2.8 DG DN | Contemporary and the Tamron 28-75 mm f/2.8 Di III RXD have image stabilization?
No, neither lens has optical image stabilization; rely on in-body stabilization if your camera has it.
Is the Sigma 28-70mm F2.8 DG DN | Contemporary or the Tamron 28-75 mm f/2.8 Di III RXD better for street photography?
For street photography, the Sigma 28-70mm F2.8 DG DN | Contemporary has the edge: it is 80 g lighter to carry.
Is the Sigma 28-70mm F2.8 DG DN | Contemporary or the Tamron 28-75 mm f/2.8 Di III RXD better for travel?
For travel, the Sigma 28-70mm F2.8 DG DN | Contemporary has the edge: it is 80 g lighter to carry.
08

Other comparisons