The Sigma 28-105mm f/4-5.6 Aspherical Full Frame zoom lens has been a staple in professional photographers' kits for years, renowned for its versatility and exceptional image quality. This lens, designed for full-frame cameras, offers a wide to telephoto focal range, making it an excellent choice for various genres, from landscapes and portraits to weddings and events.
At its core, the Sigma 28-105mm features advanced optical technology, including aspherical elements and Special Low Dispersion (SLD) glass, which work together to minimize distortion, aberration, and fringing. This results in crisp, sharp images with excellent contrast and color rendition throughout the zoom range. The lens also boasts a rounded 9-blade diaphragm, creating beautiful, soft bokeh effects for a professional, cinematic look.
The Build and Design
The Sigma 28-105mm feels robust and well-built, with a metal barrel and a weather-sealed design, providing durability and protection from the elements. Its size and weight make it well-balanced on full-frame cameras, ensuring comfortable shooting over extended periods.
The lens features a focus mode switch and a zoom lock, while the manual focus ring is smooth and responsive. Hyper Sonic Motor (HSM) ensures quiet, high-speed autofocus, making it an excellent choice for video work as well.
Size and Weight
The Sigma 28-105mm lens weighs approximately 815g (28.7 oz) and measures 97.4mm (3.8 in) in length. These dimensions make it compact and manageable, especially considering its full-frame coverage and versatile focal range.
For those using a Canon EF mount, the lens accepts 72mm filters, making it compatible with a wide range of accessories. Meanwhile, the included lens hood helps reduce flare and protects the lens from knocks and bumps.
Compatibility and Versatility
The Sigma 28-105mm is available in mounts compatible with Canon EF, Nikon F, Sony E, and Sigma SA/M. This wide compatibility ensures that photographers using different camera systems can enjoy the benefits of this lens.
The 28-105mm focal range offers a 3.7x zoom ratio, providing ample reach for most photography situations. At 28mm, the lens offers a wide field of view, perfect for landscapes and interior photography. At the 105mm telephoto end, it's ideal for portraits, sports, and wildlife photography.
Optical Performance and Image Quality
Throughout the zoom range, the Sigma 28-105mm delivers impressive sharpness and contrast, with only minimal corner softness at the extremes of the aperture range. Chromatic aberration is well-controlled, and despite the lens's reasonable price, there's no hint of the strong distortion often found in zoom lenses.
The autofocus system performs reliably and swiftly, locking onto subjects quickly and maintaining focus accurately, even in low-light conditions. The lens's ability to focus down to just 1.2m (3.9 ft) at the wide end offers ample opportunities for close-up photography.
Edge to Edge Sharpness
Even at the lens's maximum aperture, the image quality remains impressive, with excellent detail throughout the frame. Stopping down to f/8 or f/11 provides even greater sharpness, making this lens an admirable choice for landscape photography and other situations requiring critical focus.
While the Sigma 28-105mm's f/4-5.6 maximum aperture isn't the brightest, it's sufficient for everyday use and provides enough stopping power for most photography scenarios. In low light, you may need to use a higher ISO or stabilize with a tripod, but the impressive autofocus system ensures you'll capture sharp images even in challenging conditions.
In the world of optics, the Sigma 28-105mm f/4-5.6 Aspherical Full Frame zoom lens stands out as an exceptional value, offering professional image quality andbuild in a versatile, compact package. Whether you're an enthusiast or a seasoned professional, this lens deserves consideration if you're in the market for a workhorse zoom. Its combination of affordability, durability, and impressive optics makes it a sound investment that will serve you well for many years to come.