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Rent NowNOTE: This item is being sold AS-IS and may not be returned or exchanged. Stabilizer jumps at times which may indicate an underlying issue with stabilization system. Seems to work fine a majority of the time.
The Sigma 120-300mm f/2.8 EX DG OS APO HSM AF Lens for Canon EF is a professional-grade super-telephoto zoom lens, effectively transforming a large-aperture 300mm f/2.8 prime into a versatile zoom that lets photographers determine composition without needing to change their vantage point. It’s aimed at sports, wildlife, and action photographers who need a constant f/2.8 aperture across a substantial telephoto range for demanding professional work.
Optically, the lens covers a 120-300mm focal range with a constant f/2.8 maximum aperture throughout the zoom, giving consistent exposure and strong subject separation whether shooting at the wide or telephoto end. The optical design employs an Apochromatic (APO) construction using SLD (Special Low Dispersion) and FLD glass elements to correct chromatic aberration, along with Sigma’s Super Multi-Layer Coating to reduce flare and ghosting and maintain optimum color balance, a particular consideration for digital sensors. On Canon’s APS-C bodies, the lens delivers an effective 192-480mm equivalent focal range.
Autofocus is handled by Sigma’s Hyper Sonic Motor (HSM), providing a silent, responsive, high-speed autofocus drive paired with an internal focusing system, along with full-time manual focus available simply by rotating the focus ring at any time. Since focusing and zooming do not change the lens’s overall length, it remains easy to handhold and use, and because the front element does not rotate during focus, circular polarizing filters can be attached and adjusted without complication. Sigma’s Optical Stabilizer (OS) facilitates handheld photography at shutter speeds up to four stops slower than would otherwise be possible.
Build quality reflects Sigma’s EX-series professional construction standards, with splash-proof sealing to help protect against light moisture and dust during outdoor shooting. The lens measures a compact 11.4 inches (29cm) in length and weighs approximately 6.5 lb (2.9kg), and accepts a 105mm filter thread. It’s compatible with Sigma’s optional teleconverters, extending its reach further for photographers who need even greater magnification, and can be paired with the optional Sigma USB Dock for fine-tuning autofocus characteristics and updating firmware.
As a full-frame-compatible DG-series lens, the Sigma 120-300mm f/2.8 EX DG OS APO HSM is optimized for use with digital SLR cameras and produces its full telephoto field of view on full-frame Canon EF-mount bodies, while remaining compatible with APS-C Canon cameras at the extended equivalent focal range noted above.
Key Features
– 120-300mm constant f/2.8 super-telephoto zoom for Canon EF mount
– Apochromatic (APO) design with SLD and FLD glass elements
– Super Multi-Layer Coating
– Hyper Sonic Motor (HSM) autofocus with full-time manual focus override
– Internal focusing (no length change during focus or zoom)
– Non-rotating front element (polarizer-friendly)
– Optical Stabilizer (OS), up to 4 stops of shake correction
– Splash-proof construction
– Compatible with optional Sigma teleconverters and USB Dock
– 105mm filter thread
– Compact for its class: 11.4″ (29cm) length, approximately 6.5 lb (2.9kg)
– Compatible with full-frame and APS-C Canon EF-mount cameras
