Purchased this lens after reading some good reviews. The lens wasn't packaged very well and was rattling around in the box. When trying the lens it was soft at all ranges, so adjusted with the Sigma Dock and got good performance from 35mm - 105mm range, but poor from 24-35mm range.

One of their latest products is the Sigma 24-105mm f/4 HSM DG OS | A. As the name implies, it is part of the "Art" series, thus their most prestigious segment of lenses. In Nikon land, it obviously targets the Nikkor AF-S 24-120mm f/4 VR, which so far has been the only real option option for...

The Sigma 24-105mm F4 DG OS HSM is a great value for full-frame shooters. It's quite sharp, and although it's on the heavy side, its size makes it a good match for most full-frame D-SLRs, even the relatively compact Canon 6D.

4.4x zoom range; Constant f/4 aperture; Quite sharp; Optically stabilized; Full-frame coverage; USB dock compatibility

Some distortion throughout zoom range

Gary Wolstenholme reviews this new Art lens from Sigma with a useful range of 24mm to 105mm.

Excellent sharpness throughout the zoom range; Good build quality; Constant f/4 maximum aperture; Effective optical stabilisation

82mm; No weather sealing

Good walkabout lens for daytime shooting. Minimum focal length a little limiting on DX but results are stunningly sharp with good colour gamut. Very happy with this lens!

Durable; Quick Focus; Sharp Focus; Strong Construction

Heavy

Sigma's 24-105mm f/4 DG OS HSM Art lens is a premium lens designed for full frame cameras', although it can also be used on cameras with APS-C sensors. As an 'Art' lens, it's designed to offer 'sophisticated optical performance' and meet the needs of creative photographers.

Sigma's new full-frame 24-105mm f/4 zoom competes in an already well-served area of the market but immediately inspires confidence with its substantial feel and imposing front element.

Constant f/4 aperture; Full-frame coverage; Full-time MF option; Optical stabilisation; Competitive pricing

Some chromatic aberration; Variable MTF results; Rather weighty

The Sigma 24-105mm F4 DG OS HSM is a new standard zoom lens for full-frame DSLR cameras. It will also work with APS-C sensors with an effective increase in focal length. The Sigma 24-105mm F4 DG OS HSM features a rounded 9 blade diaphragm which creates an attractive blur to the out of focus areas of...

The Sigma 24-105mm F4 DG OS HSM is a sturdily-built, full-frame standard zoom available a range of mounts at a price that won't break the bank

Constant f/4 aperture; Full-frame coverage; Full-time MF option; Optical stabilisation; Competitive pricing

Some chromatic aberration; Variable MTF results; Rather weighty

I've been a working photographer for over 30 years, and never owned a Sigma lens before. For years I shot weddings/events/meetings with Mamiya/Pentax (medium format), and gradually moved to Canon/Nikon in the digital years. During that timeframe, I only purchased and used OEM lenses.