Sigma 24-105mm F4 DG OS HSM A Canon mount lens review: A new standard?

By Kevin Carter - Monday December 16 2013

Lens Review
Introduction | Sigma 24-105mm F4 DG OS HSM A Canon lens performance: High End Performance | Sigma 24-105mm F4 DG OS HSM A Canon mount: A new reference standard for professionals | Sigma 24-105mm F4 DG OS HSM A Canon mount: Competitive Image Quality | Conclusion

The new Sigma achieves a DxOMark lens score of 24 points on the 22-Mpix Canon EOS 5D Mk III, and has a very high sharpness score of 18P-Mpix, one of the sharpest in the professional zoom category. Sharpness is good in center but corner sharpness is noticeably lower throughout the zoom range and aperture settings. Nevertheless the overall performance puts it in joint third place in our rankings for those lenses, just ahead of Canon’s previous EF 24-70mm f2.8L USM and Sigma’s current 24-70mm f2.8 model.

More importantly perhaps, it’s also ahead of the Canon 24-105mm f4L IS USM, which is ranked seventh and the EF24-70 f4L IS USM ranked sixth. However, at maximum aperture, vignetting is quite strong between the 70 to 105mm focal lengths and chromatic aberration, while low for this type of lens, may be visible at either ends of the zoom range. Barrel distortion is slightly higher than average and it quickly turns to pincushion at 35mm.

Canon EF 24-70mm f/2.8L II USM22992818
Tamron SP 24-70mm F2.8 Di VC USD Canon12992718
Sigma 24-105mm F4 DG OS HSM A Canon8992418
Canon EF 28-70mm f/2.8L USM12692415
Sigma 24-70mm F2.8 IF EX DG HSM Canon8992217
Canon EF 24-70mm f/2.8L USM12212214
Tamron SP AF 28-75mm F/2.8 XR Di LD Aspherical [IF] Canon4992117
Canon EF 24-70mm f/4L IS USM15002116
Canon EF 24-105mm f/4L IS USM12502015
Canon EF 28-105mm f/3.5-4.5 USM2491912
Canon EF 24-85mm f/3.5-4.5 USM5001711
Canon EF 28-135mm f/3.5-5.6 IS USM4131611