Sigma A 105 mm f/1.4 DG HSM
11. Summary
Pros:
- solid and stylish casing,
- sensational image quality in the frame centre,
- brilliant image quality on the edge of the APS-C sensor,
- fantastic image quality on the edge of full frame,
- lack of problems with longitudinal chromatic aberration,
- slight lateral chromatic aberration,
- imperceptible distortion,
- excellent coma correction,
- slight astigmatism,
- low vignetting on the APS-C/DX sensor,
- pleasant blurry areas,
- silent autofocus,
- rich accessory kit.
Cons:
- noticeable vignetting at the maximum relative aperture and on full frame,
- big physical dimensions and significant weight.
The price they had to pay was significant – the Sigma A 105 mm f/1.4 DG HSM is a huge device, monstrous even, especially when you add the hood and the tripod adapter to its barrel. Still I suppose many people used to medium-format won’t feel any difference between work with the Sigma attached to the Canon 5Ds R or the Nikon D850. The sensational optics quality of the Sigma supported by excellent sensors of both these camera bodies will make you forget about any differences between that and medium format and we mean here dimensions, weight and the quality of photos too.
Sensational optics closed in a solid barrel and lack of any serious flaws – small wonder the Sigma, tested here, is another lens from that producer that gets our “Lenstip.com Editor’s Choice” badge.
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