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SIGMA 28-70mm f/2.8 DG DN Contemporary lens, black barrel with zoom and focus rings, 67mm filter thread visible

SIGMA

SIGMA 28-70mm f/2.8 DG DN Contemporary camera lens

SKU CH-31MA-1Y0CA

Compact full-frame mirrorless zoom covering 28-70mm with constant f/2.8 aperture and 16-element optical design including 2 FLD, 2 SLD and 3 aspherical elements

  • Compact constant f/2.8 aperture across 28-70mm zoom
  • 16 elements in 12 groups with 3 aspherical elements
  • 2 FLD and 2 SLD elements correct aberrations
  • Stepping motor drives fast internal autofocus
  • Includes 67mm filter kit, pouch, cleaner and cap tether

Compact zoom for mirrorless cameras

The SIGMA 28-70mm f/2.8 DG DN Contemporary lens is built for Sony E-mount mirrorless bodies. It covers a versatile wide-to-short-tele range with a constant f/2.8 aperture. The optical formula uses 16 elements in 12 groups, including two FLD, two SLD and three aspherical elements. Internal focusing and a stepping motor deliver fast, quiet autofocus suitable for both stills and video work.

Constant aperture across the zoom range

The f/2.8 maximum aperture stays fixed from 28mm to 70mm, so exposure does not shift while zooming. This helps in low light and gives consistent depth-of-field control throughout the range. The design corrects axial chromatic aberration and sagittal coma aberration for sharpness from centre to edge. Super Multi-Layer Coating and Nano Porous Coating reduce flare and ghosting in backlit scenes.

Lightweight build with 67mm filter thread

A compact barrel keeps the kit light for all-day carry, and the 67mm front thread accepts common circular filters without vignetting. Internal focusing means the front element does not rotate, making polarisers and graduated filters easier to use. The bundle adds a Corel PC software suite, a filter kit, lens pouch, cleaning supplies and a lens-cap tether for everyday protection.

Highlights

  • Compact constant f/2.8 aperture across 28-70mm zoom
  • 16 elements in 12 groups with 3 aspherical elements
  • 2 FLD and 2 SLD elements correct aberrations
  • Stepping motor drives fast internal autofocus
  • Includes 67mm filter kit, pouch, cleaner and cap tether

Specifications

No published specifications for this item yet.

Questions about this item

Should I choose the 28-70mm f/2.8 over other focal lengths?

This zoom covers 28 mm wide-angle to 70 mm portrait range at a constant f/2.8, so one lens handles landscapes, events and portraits without swapping glass.

What does the constant f/2.8 aperture mean when I am shooting?

The aperture stays at f/2.8 throughout the zoom, giving consistent exposure and shallow depth of field from 28 mm to 70 mm in low light.

How does the Sony E mount affect what I can do with this lens?

The native E-mount design enables full communication with Sony mirrorless bodies, supporting high-speed autofocus and in-camera corrections.

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