First of all, this lens is WIDE. It is excellent for shooting interiors, exteriors, architecture - here the shortcomings indicated by the previous author - dysturbia (optical distortions - "barrel" and "cushion") - become an ESSENTIAL creative advantage. I shot Germany in the summer (more than 1000 photos -only with this "glass", although I used others) -still a source of Pride and Boasting, "breaks" Gothic architecture in such a way that it takes your breath away ! An outstanding "field" of vision - in the smallest areas it makes a "coverage" - it's hard to believe! Of course with dysturbia . Not a "variable" aperture f / 4 - I consider it a virtue. A STANDARD lens can be conditional, but with much greater success than a "fix" or "tel".
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