As you can notice glancing at images shown below the Sigma S 60–600 mm doesn’t have any problems with correcting longitudinal chromatic aberration. At 200 and 600 mm focal lengths you can’t spot any traces of it and at 400 mm it is only slightly noticeable because blurry areas are slightly tinted. Still the problem is not big or even moderate so the performance of the lens should be assessed positively here.
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Now let’s check the performance concerning lateral chromatic aberration – graphs below show it on the edge of the APS-C/DX sensor and on the edge of full frame.
In this place the high zoom ratio makes itself felt – the difference between particular focal lengths is pronounced, more noticeable than in the case of lenses such as e.g. the Tamron SP 150–600 mm f/5–6.3 Di VC USD, the Sigma S 150–600 mm f/5–6.3 DG OS HSM or the Nikkor AF-S 200–500 mm f/5.6E ED VR. It should be mentioned that the 60 mm focal length, with its weak performance, is mainly responsible for this result. In the 100-600 mm range the aberration shouldn’t bother you at all because its values are low or very low, similar to the values of the rivals at respective focal lengths. However, it would be difficult to criticize the lens for any slip-up; it fares weaker than its competitors only at the focal length they don’t include in their ranges…
Canon 5D III, RAW, 60 mm, f/4.5
Canon 5D III, RAW, 200 mm, f/11.0
Spherical aberration
First images of this chapter don’t feature any ‘focus shift’ effect at any presented focal length. Circles of light we got before and after the focus aren’t perhaps completely identical but the differences between them aren’t pronounced, concerning mainly the intensity of the rim. You can say the tested Sigma doesn’t have any noticeable problems related to spherical aberration.
