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Miljenko Devcic | all galleries >> tech >> Lens reviews and tests >> Nikkor 17-55 f/2.8 F-S DX vs Sigma 18-50 f/2.8 DC >> Resolution & CA charts > 17/18 mm
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17/18 mm

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Miljenko Devcic17-Sep-2005 17:20
Hi Kjetil, thanks for your analysis. You're right about the differences. Those two sets were done using different Sigma 18-50 samples. Both were thoroughly tested and measured and differences were easily spotted. Interestingly, I can't decide on winner 'cause both samples have similar balance of good and bad areas. Incidently, I have bought this very sample for my private use. Regards, Miljenko
Kjetil Johannessen 17-Sep-2005 10:20
This graph is inconsistant for the Sigma with the results you published for it compared with the 18-70, particularly for the edge? Can you explain? Sample variation? Which is the most representative?

Besides that thanks for sharing the results with us thorough testing and well presented.