Nikon Nikkor Z 24-70 mm f/2.8 S
5. Chromatic and spherical aberration
Chromatic aberration
The Nikkor Z 24–70 mm f/2.8 S deals with longitudinal chromatic aberration well. Both in the middle of the focal range and at 70 mm colouring of out-of-focus areas is slight. We think it will be barely noticeable in real-life photos. |
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Two graphs below show the performance of lateral chromatic aberration depending on the focal length and aperture value; the first shows the situation on the edge of the APS-C/DX sensor and the second one deals with the edge of full frame.
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It is clear that the highest level of this aberration you see at the shortest focal length; still, even at that place it won't be a huge problem. The maximum values we got didn't exceed a level of 0.06%. At 45 and 70 mm aberration is very low and it won't disturb you at all.
| Z7, RAW, 24 mm, f/4.0 | Z7, RAW, 70 mm, f/8.0 |
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Spherical aberration
First images, presented in this chapter, and photos of defocused circles of light show that spherical aberration makes itself felt a bit in the centre of the focal range. You can notice very slight focus shift effect but, at the same time, circles you get before and behind the focus point feature distinct differences when it comes to intensity of the rim. That effect is much less visible at 70 mm focal length.
| Nikon Z7, 45 mm, f/2.8, before | Nikon Z7, 45 mm, f/2.8, after |
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| Nikon Z7, 70 mm, f/2.8, before | Nikon Z7, 70 mm, f/2.8, after |
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