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Sigma 28-70mm f/2.8 DG DN C (Contemporary) Full-Frame Autofocus Lens for Sony E-Mount, Black {67}

Model #386088
  • $824.00

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New in box complete with manufacturer's USA warranty. Not previously owned or used.
Essentially new with no signs of use. “Open box.” In manufacturer's packaging with original accessories and instructions. 180-day warranty.
Barely used with virtually no traces of wear. Only the closest inspections will reveal slight use. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Lightly used with limited signs of wear. Exceptionally nice but may have slight wear on finish visible. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Noticeably used with average signs of wear. Shows moderate wear for the age of the item, with the possibility of blemishes and/or minimal dings. Lens glass may have average dust and zoom/focus ring tension may have slight looseness or tightness overall, but will not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Frequently used with above-average wear. May have dents, dings, or finish loss. Lens glass may have small scratches, dust, and blemishes, and zoom/focus ring tension may have moderate looseness or tightness overall, but should not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Heavily used with extensive visible wear. Equipment is rough, with multiple impressions in the finish, excessive finish loss and brassing. Glass will have marks, fungus and/or heavy/cloudy haze which could affect picture quality. Accessories usually not included, unless noted in listing. Not covered under KEH warranty.
Non-functional or damaged. Equipment will not work. Usable for parts. Not covered under KEH warranty and non-returnable.
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Sigma 28-70mm f/2.8 DG DN: Full-frame constant aperture zoom built for mirrorless portability

At 470 g and 101.5 mm long, this is the smallest and lightest f/2.8 standard zoom in its class for full-frame mirrorless. That size difference over a 24-70mm is not incidental, Sigma achieved it by starting the focal range at 28mm, which allowed the optical formula to shrink without sacrificing the constant f/2.8 aperture that makes a standard zoom genuinely useful in mixed or low light. The 16-element, 12-group construction pairs FLD and SLD low-dispersion glass with three aspherical elements to manage chromatic aberration and field curvature across the 28-70mm range.

The autofocus design uses a single lightweight focusing element driven by a stepping motor, which means fast, near-silent AF. That matters for video shooters running the lens on a gimbal, where both the balance point and the audio profile of the focus system affect real-world usability. The 67mm filter thread and 19 cm minimum focusing distance round out a spec sheet that covers most of what a working photographer needs from a walk-around zoom.

This lens draws its optical lineage from the 24-70mm f/2.8 DG DN Art, a design with a strong reputation in the Sony E ecosystem. You get much of that performance in a body that fits naturally in a smaller kit, the kind of lens you actually bring along than leave behind because the bag is already full.

Who It's For

Travel and documentary photographers who run Sony full-frame bodies will appreciate a 470 g f/2.8 zoom that covers wide to portrait-length without dominating a bag. Video creators and gimbal operators benefit directly from the stepping motor's quiet operation and the single-element AF unit that keeps the drive system light and balanced. Wedding and event photographers shooting available light get the constant f/2.8 across the full 28-70mm range. Street photographers and everyday walkers gain from the 101.5 mm length, which keeps the overall camera-and-lens profile smaller than any competing f/2.8 standard zoom in this mount.

Key Features

  • Constant f/2.8 aperture across entire 28-70mm zoom range
  • 16 elements in 12 groups with FLD and SLD low-dispersion glass
  • Three aspherical elements reduce chromatic aberration and field curvature
  • Single lightweight focusing element with stepping motor for near-silent AF
  • Smallest and lightest f/2.8 standard zoom for full-frame mirrorless at 470g
  • 19cm minimum focusing distance with 67mm filter thread
  • Optical design based on acclaimed 24-70mm f/2.8 DG DN Art

FAQ

How does the 28-70mm compare in size to a 24-70mm f/2.8 zoom?
Starting at 28mm instead of 24mm allowed Sigma to shrink the optical formula significantly. At 470g and 101.5mm long, it's the smallest and lightest f/2.8 standard zoom in its class for full-frame mirrorless, making it genuinely portable without sacrificing the constant f/2.8 aperture.
Is autofocus silent for video work?
Yes. The single lightweight focusing element driven by a stepping motor delivers fast, near-silent AF. That combination matters for gimbal work where both balance and focus noise affect usability.
What low-dispersion glass does this lens use?
Two FLD (fluorite low-dispersion) elements and two SLD (special low-dispersion) elements manage chromatic aberration across the zoom range. Three aspherical elements handle field curvature.
What's the closest focus distance?
19cm (7.5 inches), which is typical for a standard zoom and workable for most product and detail shooting.
Does this lens have optical image stabilization?
No. Sigma's Contemporary 28-70mm relies on fast autofocus and constant f/2.8 aperture for low-light performance rather than built-in stabilization.
How does the 28-70mm f/2.8 DG DN compare to the 24-70mm f/2.8 DG DN Art?
The optical lineage is shared, but the 28-70mm is noticeably more compact and lighter. You trade 4mm of wide-angle coverage for a lens that actually fits in a smaller kit and won't force you to leave it behind because the bag is full.
What filter size does it use?
67mm, standard for mid-range zooms and easy to stock filters for.
SpecificationValue
Focal Length28-70mm
Max Aperturef/2.8
Min Aperturef/22
MountSony E
Lens MountSony E
Minimum Focusing Distance7.5" / 19 cm
Filter Thread67mm
Optical Groups12
Optical Elements16
Length4" / 101.5 mm
Maximum Diameter2.8" / 72.2 mm
Angle Of View75.4° to 34.3°
Package Weight1.73 lb
Box Dimensions6.8 x 4.7 x 4.6"
Weight16.6 oz / 470 g

This description was generated using AI based on KEH's internal product standards, product expertise, and knowing what customers care about most. While we strive for accuracy, details may vary by individual item.

Brand Name Sigma
Filter Size 67mm
Focus Type Autofocus (lens motor)
Lens Mount Sony E Mount
Lens Type Standard / Normal
Max Focal Length 70mm
Min Focal Length 28mm