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| p.1 #10 · Dpreview: Sigma 50mm F1.4 DG HSM Art Lab Test Review |
I am Nikon. I gave up my old sigma 50 1.4 because of focus inaccuracies. I loved how the Sigma rendered the images, not just bokeh but also colors. However, the fact that focusing was erratic at 1.4 meant I could use few of my images. Part of the reason was the really short rotational distance the AF motor had to travel from min focus to infinity (about 90 degrees, if I remember correctly) which exacerbated focusing errors. This was about two years ago, at a time when Nikon itself had no decent 50mm - they had the G lens that focused well, but was generally soft and subpar compared to their other stellar G lenses (35G, 85G, 200G). They now have come up with the 58 I'm happy with, both for focus accuracy (after a trip to Nikon for calibration) and for the rendering / 3D feel of the images. There's no doubt that the image quality of the Sigma lens is amazing, and it's a sharp, sharp lens; I really hope it can also focus reliably on a decent camera when shot f/1.4-f/2 (say on a D4, in low light, and compared side by side with the nikon 58/1.4G). Now that would be a killer lens.