DXO:
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Measurements > sharpness > field map à F1.4
Canon:

Sigma:

Measurements > Chromatic aberration > field map à F1.4
Canon:

Sigma:





Lenstip :
Canon (APS-C):

Sigma:

In order not to sound groundless let’s present the achievements of the Sigma and its rivals in one chart. Below you find the results we got, expressed in lpmm by f/1.4 and by that aperture where the lens got to the peak of its possibilities ( it means the f/4.0-5.6 range).

f/1.4
38.8 Sigma 1.4/35
30.1 Zeiss 1.4/35
25.1 Nikkor 1.4/35G
31.1 Canon 1.4/35L
20.4 Sony 1.4/35G
27.2 Samyang 1.4/35
Max
47.4 Sigma 1.4/35
47.4 Zeiss 1.4/35
46.3 Nikkor 1.4/35G
44.1 Canon 1.4/35L
38.4 Sony 1.4/35G
44.4 Samyang 1.4/35

At the maximum relative aperture and in its proximity the Sigma simply eliminates the competitors. On stopping down only the Zeiss 1.4/35 can rival its results. The chart shows it clearly who wins and who loses here.



Photozone: (là le Sigma est testé sur un Nikon enfin bon..)




Quand tout le monde trouve des résultats cohérents...


Et en bonus, DigitalRev, battle of bokeh sur trois 35mm F1.4..