Sigma 24-70/2.8 class lenses (and similar)

Sigma 24-70mm 1:2.8 DG OS A

History

Sigma has the largest family tree of universal high-aperture zoom lenses. It is sometimes very difficult to distinguish one model from another, as well as find information on a particular modification.

Below are listed all such lenses in chronological order of their publication, the names are indicated according to the spelling on the lens housing or near the front lens, and the optical design and the number of special elements are indicated:

1. Sigma 28-70mm 1: 2.8 Zoom, 13/10 [0], since May 1992, aka Vivitar Series 1 28-70/2.8 VMC
   
2. Sigma 28-70mm 1: 2.8 Zoom EX Ashperical [+ -D], 15/12 [2 ASP], from the end 1998
3. Sigma 28-70mm 1: 2.8 Zoom EX aspherical DF [+ -D], 15/12 [2 ASP], since February 2001
4. Sigma 24-70mm 1: 2.8 Zoom EX DG aspherical [+ -D], [DF] 14/13 [3 ASP, 2 SLD], since February 2001
5. Sigma 24-60mm 1: 2.8 Zoom EX DG [+ -D], 16/15 [4 ASP, 2 SLD], several subversions, since May 2004
6. Sigma 24-70mm 1: 2.8 Zoom EX DG Macro [+ -D], 14/13, [3 ASP, 2 SLD], since September 2004
7. Sigma 28-70mm 1: 2.8 Zoom EX DG [+ -D], 14/12 [4 ASP, 2 SLD] since September 2004
8. Sigma 24-70mm 1: 2.8 EX DG HSM, 14/12 [3 ASP, 1 ELD, 2 SLD], since September 2008
9. Sigma 24-70mm 1: 2.8 DG OS A, 19/14 [4 ASP, 3 SLD], since February 2017
10. Sigma 24-70mm 1: 2.8 DG DN A, 19/15 [3 ASP, 2 SLD, 6 FLD], since November 2019
11. Sigma 28-70 mm 1:2.8 DG DN C, 16/12 [3 ASP, 2 SLD, 2 FLD], from February 2021

Separately, you can still identify almost universal:

1. Sigma 20-40mm Zoom 1: 2.8 EX DG aspherical IF [+-D], 17/13 [2 ASP], since August 2001
2. Sigma 24-35mm 1:2 DG A, 18/13 [1 ASP, 7 SLD, 1 FLD, 1 ASP SLD], since June 2015

Designations in the names of the lenses:

• EX (EXcellent) - the highest quality professional lens
• DG - the lens is designed for full-frame SLR digital cameras
• DN - lens designed for mirrorless digital cameras
• Df (Dual Focus) - a focusing system for convenient work with the focusing ring (DF is written near the front lens, or on the box / instruction)
• IF (Iinternal Focusing) - internal focus
• aspherical (ASP) - the presence of aspherical elements in the optical scheme
• SLD (Special Low Dispersion) - special low dispersion elements in the optical scheme
• FLD - (Fluorite-like Low Dispersion) - special low-disperse elements in the optical scheme with characteristics close to fluorite
• ASP SLD (ASPherical Special Low Dispersion) - special elements that are simultaneously aspherical and low dispersion
• ZOOM - zoom lens, the presence of zoom
• HSM (Hyper Sabout nothing Motor) - ultrasonic focusing motor
• OS (Optical Stabilizer) - built-in optical image stabilizer
• A (Art) - Sigma Art Premium Lens Range
• С (Ccontemporary) - a line of modern lenses with a good price / quality ratio
• D - a letter in the name of the lens, which was placed only on some lenses for Nikon F cameras (analogue 'Nikon D') and Sony / Minolta (because the name of the lenses from the list is [plus or minus D]). Typically, the letter 'D' is located near the focal length indicated on the case, such as 20-40mmD, 24-60mmD, 24-70mmD, 28-70mmD)