EXCERPT page containing first few paragraphs. 2021-12-02 20:52:12
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As is Canon’s wont, MTF charts are wide open and at 10/30 line pairs/mm with unspecified spectral weighting. Still the charts look very promising.
The falloff at the 16mm end into the corners could be field curvature, so actual performance is likely to be even higher, particularly when stopped down to f/5.6 or f/8.
The 35mm MTF chart looks excellent, suggesting that f/5.6 will shine.
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