The Sigma 120-400mm f/4.5-5.6 DG OS HSM APO is a versatile telephoto zoom lens designed for Canon EF-mount cameras. Its expansive 120-400mm focal length range makes it well suited for wildlife, sports, aviation, outdoor events, and other applications where additional reach is required.
Designed for use with full-frame cameras, the lens can also be paired with compatible APS-C Canon DSLRs, where the crop factor provides an even narrower field of view for photographing distant subjects. The variable f/4.5-5.6 maximum aperture helps balance telephoto performance with a manageable overall lens design.
Sigma’s optical construction incorporates Special Low Dispersion glass elements to help minimize chromatic aberrations and color fringing throughout the zoom range. This design promotes improved sharpness, contrast, and color accuracy when working at longer focal lengths.
Built-in Optical Stabilization (OS) helps reduce the effects of camera shake when shooting handheld, particularly at longer focal lengths where movement can become more noticeable. This stabilization provides additional flexibility when working without a tripod or monopod.
Sigma’s Hyper Sonic Motor (HSM) provides fast and quiet autofocus performance, making the lens suitable for photographing moving subjects. Manual focus control is also available when more precise focusing adjustments are required.
A removable tripod foot provides additional support and improved balance when mounting the lens to a tripod or monopod. The combination of an extended telephoto range, optical stabilization, and HSM autofocus makes this lens a practical option for photographers who need substantial reach across a variety of shooting situations.
– Included Accessories:
Includes front and rear lens caps and removable tripod foot. Lens hood is not included.
– Condition Note:
Some internal dust is visible within the lens.

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