Sigma 120-300mm F2.8 EX DG HSM

Canon EF

Review

The Sigma 120-300mm F2.8 EX DG HSM is a highly regarded telephoto zoom lens designed for Canon EF mounts. This lens is particularly favored by sports and wildlife photographers who require a combination of fast autofocus, a bright aperture, and a versatile zoom range.

Build and Design

The lens boasts a robust build quality, typical of Sigma's EX line. It features a solid metal barrel which feels durable, making it suitable for the rigors of outdoor shooting. Weighing around 3.5 kg (7.7 lbs), it is on the heavier side, and while the balance is generally good, a tripod or monopod would be beneficial for extended handheld shooting. The lens also features a weather-sealed design, offering peace of mind when shooting in unpredictable weather.

Optical Performance

One of the standout features of this lens is its impressive optical performance. The F2.8 maximum aperture allows for excellent low-light performance and a beautiful depth of field. Images are sharp across the frame, with minimal distortion and good contrast. However, there is some chromatic aberration noticeable in high-contrast situations, but it's not overly distracting and can often be corrected in post-processing.

Autofocus and Handling

The Hyper Sonic Motor (HSM) ensures fast and quiet autofocus, which is a real advantage when tracking fast-moving subjects. The AF speed is generally reliable, although in lower light conditions, it may struggle slightly to lock on. The zoom ring is smooth, but some users reported that the focal length can inadvertently shift if not held securely, an aspect that may require adjustment during use.

Versatility

The 120-300mm focal length range makes this lens highly versatile for various genres of photography. From sporting events to wildlife photography, the ability to shoot at a constant F2.8 throughout the zoom range allows for great control over exposure and depth of field. The addition of 1.4x and 2.0x teleconverters is also supported, which can extend the focal length while maintaining quality to some extent, although some sharpness and contrast may be lost.

Pros and Cons

Pros

• Excellent build quality and weather sealing.
• Impressive optical performance with sharp images and low light capabilities.
• Fast and quiet autofocus with HSM technology.
• Versatile focal length range suitable for various subjects.
• Ability to use teleconverters to further extend reach.

Cons

• Heavy and may require a tripod or monopod for handheld shooting.
• Some noticeable chromatic aberration in high-contrast shots.
• Autofocus can struggle in low light conditions.
• Inadvertent shifts in focal length can occur if not handled carefully.

Verdict

The Sigma 120-300mm F2.8 EX DG HSM is a fantastic lens that delivers exceptional performance for professional photographers. Its combination of sharp optics, fast autofocus, and solid build quality makes it an excellent choice for sports and wildlife photography. While it does have some drawbacks, such as weight and occasional autofocus issues in low light, the advantages often outweigh these cons. For anyone looking for a high-quality telephoto lens in the Canon EF mount, this Sigma lens should certainly be on your shortlist.