Sony FE 70-200 mm f/2.8 GM OSS II
6. Distortion
How the new Sony fares in this category? You can say at once that you won't get any troubles at the smaller sensor. At 70 mm deformations are exactly zero, with our official result being 0.00%. Then distortion increases at 100 mm where you deal already with its slight pincushion vatiation of +0.57%. It increases once again to +0.80% at the 135 mm focal length only to reach +0.88% at the maximum focal length.
In the case of full frame distortion shouldn't bother you at all only at the shortest focal length, where it is +0.23%. After passing to 100 mm it increases quite fast, reaching a value of +1.46%. Fortunately past this point its increase slows down – at 135 mm we got a value of 1.62% and at 200 mm it reached +1.85%. Within the margin of error such results are very similar to the performance of the Nikkor, tested by us not long ago.
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Still we have to admit the lens didn't impress us in this category. The problem is that, contrary to the new Sony, other lenses of this class, tested by us so far, had results closer to +1.5% than to almost +2% at the longer end of their focal spectrum.
| Sony A7R III, APS-C, JPEG, 70 mm | |||
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| Sony A7R III, APS-C, JPEG, 100 mm | |||
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| Sony A7R III, APS-C, JPEG, 135 mm | |||
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| Sony A7R III, APS-C, JPEG, 200 mm | |||
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| Sony A7R III, FF, JPEG, 70 mm | |||
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| Sony A7R III, FF, JPEG, 100 mm | |||
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| Sony A7R III, FF, JPEG, 135 mm | |||
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| Sony A7R III, FF, JPEG, 200 mm | |||
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