Nikon Nikkor Z 600 mm f/6.3 VR S
7. Coma, astigmatism and bokeh
| Center, f/6.3 | Corner APS-C, f/6.3 | Corner FF, f/6.3 |
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| Center, f/9.0 | Corner APS-C, f/9.0 | Corner FF, f/9.0 |
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Astigmatism, understood as an average difference between horizontal and vertical MTF50 function values, amounted to just 2.9%. It's a splendid value.
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When it comes to out-of-focus areas most of them look very well. The appearance of defocused circles is very nice, without any heterogeneities or any accented brighter rim. Mechanical vignetting is the only problem here, making itself felt even on stopping down the aperture by 2 EV.
| Center, f/6.3 | Corner APS-C, f/6.3 | Corner FF, f/6.3 |
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| Center, f/9.0 | Corner APS-C, f/9.0 | Corner FF, f/9.0 |
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Center, f/13.0 | Corner APS-C, f/13.0 | Corner FF, f/13.0 |
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