Reviews and Problems with Sigma 15-30mm F3.5-4.5 EX DG ASPHERICAL
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Value for money 10
Overall quality 7
Build quality 8
Sigma AF 15-30mm f/3.5-4.5 EX DG - Review / Lab Test Report
2 September 2006
Conclusion: The Sigma AF 15-30mm f/3.5-4.5 EX DG proved to be a worthy representative within the ultra-wide arena. It very sharp throughout the range without any more weakness in terms of resolution. On the downside there're moderately strong barrel distortions at 15mm and visible lateral CAs (color shadows at the image borders).