Sigma 70mm f/2.8 Macro ART at a glance:

• EF-Mount Lens/Full-Frame Format
• Aperture Range: f/2.8 to f/22
• Two FLD Elements, Two SLD Elements
• Low Dispersion and Aspherical Elements
• Super Multi-Layer Coating
• 1:1 Magnification, 10.2″ Min. Focus
• Coreless DC AF Motor, Manual Override
• Weather-Sealed, Brass Bayonet Mount
• Rounded 9-Blade Diaphragm
• Compatible with Sigma USB Dock

Dustin Abbott completed his comprehensive review of the Sigma 70mm f/2.8 Macro ART lens.

From the conclusion;

[…] the Sigma 70mm f/2.8 Macro | ART is a somewhat quirky lens.  It deviates from the path established for the ART series on a number of levels, and also deviates from the modern standard of what a macro lens should have (Image Stabilization, Internal Focus, etc…)  The one area where it is very much a Sigma ART lens is in the optical performance, where it delivers as good a performance as I’ve seen from a macro lens outside of bokeh that is a little busy in some situations.  I’m less impressed by the decision about the focus motor, at least on DSLRs […]

Dustin Abbott’s review comes with a huge set of sample pictures and analyses all aspects of the Sigma 70mm f/2.8 Macro ART. For those who prefer to watch, the video review below tells everything.

Sigma 70mm f/2.8 Macro ART: B&H Photo | Adorama | Amazon

Sigma 70mm f/2.8 DG Macro Art at a glance:

• EF-Mount Lens/Full-Frame Format
• Aperture Range: f/2.8 to f/22
• Two FLD Elements, Two SLD Elements
• Low Dispersion and Aspherical Elements
• Super Multi-Layer Coating
• 1:1 Magnification, 10.2″ Min. Focus
• Coreless DC AF Motor, Manual Override
• Weather-Sealed, Brass Bayonet Mount
• Rounded 9-Blade Diaphragm
• Compatible with Sigma USB Dock

ePhotozine completed there review of the new Sigma 70mm f/2.8 DG Macro Art lens.

From the conclusion:

Sigma has provided a well made, solid macro lens that delivers very impressive image quality. It operates flawlessly, albeit it with slightly slower than average AF, but proves an excellent overall match for the Canon EOS 5DS R.

The 70mm focal length is a good compromise for the full frame bodies. For APS-C cameras the “35mm format equivalent” would be 112mm for Canon. This means that a 50mm macro might be a better choice for APS-C if the user wanted a similar field of view to the one this lens offers in full frame.

[…] in summary, the new Sigma lens offers all the right things in terms of handling and quality and is well worth considering as an alternative to the more common focal lengths. Read the review…

Comparable Canon Macro lens offerings are more expensive than the Sigma 70mm f/2.8 DG Macro.

Sigma 70mm f/2.8 DG Macro available in USA at Amazon | Adorama | B&H Photo, and in Europe at Amazon Germany | Park Cameras (UK) | Amazon UK