Reviews and Problems with Sigma 18-200mm F3.5-6.3 DC OS HSM
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Value for money 6
Overall quality 4
Build quality 5
Sigma AF 18-200mm f/3.5-6.3 DC - Review / Lab Test Report
18 May 2006
Conclusion: There's no such thing as a free lunch in lens land and the Sigma AF 18-200mm f/3.5-6.3 DC is no exception here. The resolution figures are generally quite decent and regarding the extreme zoom range you may accept the very pronounced distortions present throughout the zoom range as well as a few...
Sigma AF 18-200mm f/3.5-6.3 DC OS (Canon) - Review / Test Report
9 April 2006
Conclusion: The Sigma AF 18-200mm f/3.5-6.3 DC OS is an extremely versatile lens but performance-wise it is a bit of a mixed bag. The resolution characteristic varies significantly throughout its immense zoom range.