Sigma A 85 mm f/1.4 DG HSM
11. Summary
- solid and stylish casing,
- brilliant image quality in the frame centre,
- sensational image quality on the edge of APS-C,
- very good image quality on the edge of full frame,
- lack of noticeable problems with spherical aberration,
- moderate longitudinal chromatic aberration,
- imperceptible lateral chromatic aberration,
- practically zero distortion level,
- slight coma,
- negligible astigmatism,
- low vignetting on APS-C/DX,
- silent and accurate autofocus.
Cons:
- too high vignetting on full frame.
I imagine Zeiss must gnash their collective teeth quite strongly. They invented the Otus series which was supposed to prove that, for a quite astronomical price, you can produce an optically outstanding lens practically without any flaws. Meanwhile Sigma presented their 85 mm device which is not only able to win a duel with the Otus 1.4/85 in the most important categories but also breaks the resolution record of the Otus 1.4/28 on the sensor of the Canon EOS 5D Mark III. Mind you it is over three times cheaper. Nothing to add I suppose – a fully deserved Lenstip Editor’s Choice award.
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