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Canon RF 16-28mm f/2.8 IS STM review: does this make pricey, wide-angle trinity lenses redundant?
The Canon RF 16-28mm f/2.8 IS STM is a “never before seen” lens in either of the manufacturer's EF or RF ranges. The new ...
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Sigma 18-50mm f/2.8 DC DN Contemporary Lens Review - Performance
At 18mm, central sharpness is excellent from f/2.8 to f/8, very good at f/11 and f/16 and soft at f/22. The edges are very good at f/2.8 and f/4, excellent at f/5.6 and f/8, very good at f/11 ...