Product Information
The Sigma 50–120mm F2.8 DC OS | Contemporary is a fast telephoto zoom for Sony E-mount APS-C mirrorless cameras. Its 50–120mm focal-length range and constant F2.8 aperture pair with Sigma Optical Stabilizer (OS) for a compact, stabilized lens option.
Optical design for a versatile telephoto range
The 18-element, 13-group optical construction includes one FLD element, three SLD elements, and four aspherical elements. An 11-blade rounded diaphragm and a minimum aperture of F22 support the lens’s documented aperture control.
Close focusing and practical controls
Focus as close as 23cm at the wide end and 55cm at the telephoto end, with a maximum magnification range of 1:3 to 1:4.7. The Sony E version includes an iris ring, and its 55mm front filter thread supports compatible filters.
Built for APS-C Sony E cameras
Designed for APS-C mirrorless cameras, this lens provides a 31.7°–13.5° angle of view on Sony E. Its dust- and splash-resistant construction supports use in challenging conditions, but the lens is not waterproof. On a full-frame mirrorless camera, its image circle does not cover the entire sensor, so crop mode may be needed.
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Pouch
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LH585-01 Lens Hood
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LCF-55 IV Front Cap
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LCR III Rear Cap
| Lens | |
|---|---|
| Focal Length | 50–120mm |
| Maximum Aperture | F2.8 |
| Minimum Aperture | F22 |
| Lens Construction | 18 elements in 13 groups (1 FLD, 3 SLD, 4 aspherical) |
| Diaphragm Blades | 11, rounded |
| Filter Size | 55mm |
| Focus and Stabilization | |
|---|---|
| Minimum Focusing Distance | 23cm at wide; 55cm at tele |
| Maximum Magnification | 1:3 to 1:4.7 |
| Image Stabilization | OS (Optical Stabilizer); camera-side ON/OFF control |
| Sony E-Mount APS-C | |
|---|---|
| Angle of View | 31.7°–13.5° |
| Controls | Iris ring |
| Dimensions | 66.8 × 99.0mm |
| Weight | 390g |
| Construction and Compatibility | |
|---|---|
| Environmental Protection | Dust- and splash-resistant construction; not waterproof |
| Designed Format | APS-C mirrorless |
| Full-Frame Mirrorless Use | Image circle does not cover the entire sensor; crop mode may be needed |
| Edition Number | C026 |






