Sigma A 40 mm f/1.4 DG HSM
1. Introduction
I admit the physical dimensions of the new Sigma and the latest achievements in the Art series made us very curious; they suggested the new lens might have outstanding optical properties. That’s why we agreed to test the new Sigma with real enthusiasm and the results you can find below.
We would like to thank the Sigma ProCentrum company for sending us very quickly the final specimen of the lens for testing.
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You are also invited to get acquainted with our test procedure, described in the article "How do we test lenses?" If you feel it’s still not enough, please go to our FAQ section where you can find some further explanation.
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