While focal length determines the working distance and, therefore, perspective, wide-angle focal lengths are a lot about making foreground subjects large in relation to the background subjects and about including a lot of background in the frame. Make focal length selection a priority when choosing a lens because focal length matters. The I series lens reviews will reflect the similarities of the lenses in this series. The Characteristics of lenses in this series include small size, light weight, and affordable price.Īlso consistent with lenses in this series are precision metal build quality and excellent image quality, with a useful focal length completing the very attractive Sigma 20mm F2 DG DN Contemporary Lens package. These lenses are designed for "photographers who value the experience of taking a picture just as much as the quality of the results." The Sigma 20mm F2 DG DN Contemporary Lens is a member of the Sigma "I series", "Premium Compact Primes" for mirrorless cameras. What is the Best Shutter Speed for Airshow Photography?. ![]()
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