Sigma A 105 mm f/2.8 DG DN Macro
6. Distortion
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Even though in mirrorless systems different producers often don't try to correct distprtion with optics, in the case of a 105 mm telephoto lens we didn't expect any problems.
Indeed, there were no problems at all. On the smaller APS-C sensor distortion is barely noticeable as you deal with a very slight 'pincushion' level of +0.64%. When you pass to full frame, distortion increases to +0.99% and becomes more distinct. Still, all values below 1.0% we consider to be harmless and, I suppose, that's that.
| Sony A7R II, 105 mm, APS-C | |||
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| Sony A7R II, 105 mm, FF | |||
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