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wayne seltzer wrote:
I guess photozone.de must have had a bad copy of the Siggy too then, as their tests show it soft wide open, taking until f5.6 to become competitive with the CV 125.
You're right: they admit it was a bad copy. It was convincingly bettered by the Voigtlander which record figures of 1940/1830 wide open, compared to the Sigma's 1720/1670. However, when they tested a healthy sample in Nikon mount, the lens resolved 2077/2023 wide open. It isn't possible to make cross-platform comparisons directly with Photozone's data, but in Nikon mount, the Sigma compares very favourably at all apertures with the 90mm Apo Lanthar.
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