Sigma 50-120mm F2.8 DC OS Contemporary Telephoto Zoom Lens for Sony E Mount - 694965

Sigma 694965 50-120mm F2.8 DC OS Contemporary Telephoto Zoom Lens for Sony E Mount

The Sigma 694965 50-120mm F2.8 DC OS Contemporary APS-C mirrorless telephoto zoom lens for Sony E-mount combines a constant F2.8 aperture with HLA autofocus and OS2 optical stabilization. Its approximately 75-180mm full-frame-equivalent range suits portraits, events and indoor sports, while stabilization is rated at 6.5 stops at the wide end and 4.5 stops at telephoto.¹ Reduced focus breathing helps preserve video framing, and an aperture ring puts exposure adjustment directly on the lens.

Key Features

Portable Telephoto Reach

Designed for mobile APS-C shooting, the compact Sony E-mount version weighs 390g.² That keeps telephoto capability practical when you are moving between portrait compositions or covering an event.

High Contrast Across the Frame

For compositions that place the subject away from the center, the optical design targets high contrast across the frame while correcting aberrations. Its 18 elements in 13 groups include one FLD, three SLD and four aspherical elements, and each lens undergoes Sigma's proprietary MTF testing.

Telephoto Expression With Constant F2.8

For portraits, use background blur to separate the person from the scene; for product images, telephoto perspective compression creates flatter compositions. F2.8 remains available as you change focal lengths, so zooming does not force a change to the maximum aperture.

Reduced Focus Breathing for Video

When a scene calls for a change in focus, breathing reduction limits the accompanying shift in composition. That helps keep framing more consistent as attention moves between subjects during a take.

HLA Autofocus and OS2 Stabilization

Rather than driving focus through gears, the HLA system uses direct linear movement for fast response. OS2 optical stabilization works alongside autofocus to support handheld telephoto shooting.

Aperture Ring and Simplified Controls

The aperture ring offers a direct way to set exposure on the lens while you compose. Dedicated focus-mode and OS switches are omitted to keep the control layout simple.

Dust- and Splash-Resistant Design

Seals at the mount, rings and cover connections provide dust- and splash-resistant protection for outdoor shooting.³ The front element also carries a water- and oil-repellent coating to help with cleanup after shooting.

Features

• 390g Sony E-Mount Design
  Keeps telephoto capability portable for mobile APS-C shooting.²
• 18 Elements in 13 Groups
  Combines one FLD, three SLD and four aspherical elements for aberration correction.
• Individual MTF Testing
  Each lens is individually checked for optical performance.
• Constant F2.8 Aperture
  Enables portrait separation and expressive telephoto background blur.
• Reduced Focus Breathing
  Limits framing shifts when focus changes during a take.
• HLA Autofocus
  Delivers responsive autofocus through gear-free linear movement.
• OS2: 6.5 Stops Wide / 4.5 Stops Telephoto
  Adds optical shake correction at wide and telephoto settings.¹
• Aperture Ring
  Offers hands-on exposure adjustment.
• Simplified Control Layout
  Leaves off dedicated focus-mode and stabilization switches.
• Dust- and Splash-Resistant Sealing
  Sealed connection points help protect the lens during outdoor use.³
• Water- and Oil-Repellent Front Coating
  Makes water and oily marks easier to clean from the front glass.
• 1:3 Magnification at 50mm
  Focuses as close as 23cm at the wide end for small-subject detail.

Footnotes:

¹ Stabilization ratings are based on CIPA-guideline tests at 50mm and 120mm using APS-C mirrorless equipment.

² Weight and compactness measurements refer to the Sony E-mount version.

³ Dust- and splash-resistant construction is not waterproof. Heavy splashing or water entering the lens may cause malfunction.