In this set of evaluations, we’ve compared the Sigma zoom with the highest performing full-frame primes of the same focal lengths – 18mm, 24mm and 35mm. While both models have stabilization optics, individual metrics show the new Sigma is significantly sharper than either, has far better transmission (actually +1.66 stop faster than the older Sigma and +2 stops faster the Canon) and has comparable distortion, reasonably low vignetting and very low chromatic aberration.Īre high quality prime lenses still necessary? High-grade, high-speed standard APS-C format zooms compared:Ĭomparing the new Sigma to the firm’s nearest equivalent model, the $670 Sigma 17-50mm f/2.8 EX DC OS HSM and Canon’s $1,180 EF-S 17-55mm f/2.8 IS USM,the high DxOMark Score is appreciably higher, as we’ve seen from the rankings above. Tokina AT-X PRO SD 11-16 F2.8 IF DX II Canon Tamron SP AF 28-75mm F/2.8 XR Di LD Aspherical Canon Sigma 17-70mm F2.8-4 DC Macro OS HSM Canon Sigma 70-200mm F2.8 EX DG APO Macro HSM II CanonĪs for sharpness, the new lens is on a par with the very best performers, matching the $1699 full-frame Tamron SP70-200mm f/2.8 Di VC USD and the firm’s $999 APS-C format 50-150mm (80-240mm equivalent) f/2.8 EX DC APO HSM model with a 15P- Mpix score on the Canon EOS 700D. Tamron SP 17-50mm F/2.8 Di II XR VC LD Aspherical IF Canon Tamron SP AF 70-200mm F/2.8 Di LD (IF) MACRO Canon Sigma 17-70mm F2.8-4 DC MACRO OS HSM C Canon Sigma 50-150mm f/2.8 EX DC APO OS HSM CanonĬanon EF 200-400mm f/4L IS USM Extender 1.4x The DxOMark score of 25 points puts well ahead of both the full-frame Canon EF 24-70mm f/2.8 L II USM and the Tamron SP 24-70mm f/2.8 Di VC USD (though bear in mind those lenses become the equivalent to a 38-112mm on a Canon APS-C body). With the introduction of this model, Sigma has the best performing zoom of its type. At 1.8TStops, transmission is excellent – this really is an f/1.8 lens and will likely appeal to filmmakers as much as still photographers. For most focal lengths and apertures, though the sharpness differs by 5% or less across the frame.ĭistortion, lateral chromatic aberration, even vignetting which appears softly gradated, are all very well corrected for a lens like this. At 18mm full-aperture sharpness is excellent from corner to corner, though sharpness in the outer field drops slightly through the zoom range to 35mm.
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