Sigma C 150-600 mm f/5-6.3 DG OS HSM
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, 450 mm, f/6.3 | Corner APS-C, 450 mm, f/6.3 | Corner FF, 450 mm, f/6.3 |
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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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When it comes to the astigmatism, understood as an average difference between horizontal and vertical MTF50 function values, it amounted to 5.2%. It is a level considered by us as slight.
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The Sigma should also be praised for the appearance of defocused light points. The light spread is even, without a trace of onion rings bokeh you saw in the test of the Tamron. You can say the Sigma is a tad better than its direct rival here.
| 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, 300 mm, f/8.0 | Corner APS-C, 300 mm, f/8.0 | Corner FF, 300 mm, f/8.0 |
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Center, 300 mm, f/11.0 | Corner APS-C, 300 mm, f/11.0 | Corner FF, 300 mm, f/11.0 |
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