Sigma's 50-120mm F2.8 DC OS | Contemporary is a constant-aperture telephoto zoom for APS-C mirrorless cameras, priced at $799. Sigma announced it on October 8, 2026, lists a dealer date of Thursday, October 22, and has not posted a shipping update. Unique Photo listed it as a preorder in an October 17 post. It is the first APS-C Contemporary zoom with an aperture ring, per Sigma.

Price and availability

  • Price: $799
  • Dealer date: October 22, 2026, per Sigma; no shipping update posted. Unique Photo listed it as a preorder in an October 17 post
  • Mounts: Sony E (under Sony licence), Fujifilm X and Canon RF (under Canon licence)

Key facts

  • Focal length: 50-120mm, roughly 75-180mm full-frame equivalent on Sony E and Fujifilm X
  • Aperture: constant F2.8
  • Size: 99mm long and 390g in the Sony E version; Sigma did not give figures for the other mounts
  • Optics: one FLD, three SLD and four aspherical elements
  • Autofocus: HLA linear motor, with focus breathing minimized, per Sigma
  • Stabilization: OS2 algorithm, rated 6.5 stops at the wide end and 4.5 stops at the tele end (CIPA, measured at 50mm and 120mm on APS-C mirrorless)
  • Build: dust- and splash-resistant (not waterproof), with a water- and oil-repellent front coating

Where it fits in Sigma's line

It sits alongside Sigma's 10-18mm F2.8 and 18-50mm F2.8 APS-C zooms, which Sigma says weigh under 1kg together with this lens, and Sigma pitches it as a far smaller stand-in for a 70-200mm F2.8.

Tamron announced the 16-50mm F2.8 A (B091) on October 14, a standard zoom for Sony E, Fujifilm X, Canon RF and Nikon Z. On the three mounts both companies cover (Sony E, Fujifilm X and Canon RF), the two lenses cover different ranges rather than compete directly.

Why it matters

It is a fast telephoto zoom for APS-C. Sigma's own fp2 camera uses L-Mount, which this lens does not cover. The trade-offs are in the controls: Sigma says there is no focus mode switch and no OS switch on the lens, so those settings are changed through the camera. Mounts are limited to Sony E, Fujifilm X and Canon RF. Sigma did not announce a Nikon Z or L-Mount version.

More launches are in our lens news hub.

What we checked

Details come from Sigma's press release dated October 8, 2026, fetched October 31, 2026.