Nikon Nikkor Z 180-600 mm f/5.6-6.3 VR
7. Coma, astigmatism and bokeh
| Center, 180 mm, f/5.6 | Corner APS-C, 180 mm, f/5.6 | Corner FF, 180 mm, f/5.6 |
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| Center, 400 mm, f/6.0 | Corner APS-C, 400 mm, f/6.0 | Corner FF, 400 mm, f/6.0 |
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| Center, 600 mm, f/6.3 | Corner APS-C, 600 mm, f/6.3 | Corner FF, 600 mm, f/6.3 |
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Astigmatism, understood as an average difference between vertical and horizontal MTF50 function values, amounted to 5.4% and it is a value on the borderline between very low and low level. Here the Nikkor 180-600 mm should be only praised.
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Defocused circles of light look very well, especially if you take into account the fact that you deal here with a zoom lens which optical construction features an aspherical element. There is really nothing to criticize because light spread inside the circles is even, the intensity of the outer rim – negligible, and mechanical vignetting disappears completely already on stopping down the aperture by 1 EV.
| Center, 600 mm, f/6.3 | Corner APS-C/DX, 600 mm, f/6.3 | Corner FF, 600 mm, f/6.3 |
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| Center, 600 mm, f/9.0 | Corner APS-C/DX, 600 mm, f/9.0 | Corner FF, 600 mm, f/9.0 |
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Center, 600 mm, f/13.0 | Corner APS-C/DX, 600 mm, f/13.0 | Corner FF, 600 mm, f/13.0 |
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