Tamron 150-500 mm f/5-6.7 Di III VC VXD
7. Coma, astigmatism and bokeh
| Center, 150 mm, f/5.0 | Corner APS-C, 150 mm, f/5.0 | Corner FF, 150 mm, f/5.0 |
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| Center, 300 mm, f/5.6 | Corner APS-C, 300 mm, f/5.6 | Corner FF, 300 mm, f/5.6 |
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| Center, 500 mm, f/6.7 | Corner APS-C, 500 mm, f/6.7 | Corner FF, 500 mm, f/6.7 |
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Astigmatism, understood as an average difference between vertical and horizontal MTF50 function values, amounted to 5.6% and it is a value on the borderline between very low and low levels. You can't have almost any reservations here, especially that we also didn't notice any significant differences between particular focal lengths.
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Defocused circles of light look well, especially if you take into account the fact that you deal here with a zoom device. The performance remains beyond reproach because even the intensity of the outer rim is not big and mechanical vignetting disappears completely on stopping down the aperture by 2 EV.
| Center, 500 mm, f/6.7 | Corner APS-C, 500 mm, f/6.7 | Corner FF, 500 mm, f/6.7 |
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| Center, 500 mm, f/9.0 | Corner APS-C, 500 mm, f/9.0 | Corner FF, 500 mm, f/9.0 |
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Center, 500 mm, f/13.0 | Corner APS-C, 500 mm, f/13.0 | Corner FF, 500 mm, f/13.0 |
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