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Overview of Leica S Lenses (2010 material)
Leica makes very some pretty amazing claims about the S2 lens line:
The S lenses are in a class of their own. Peak performance at full aperture and minimum focus are a requirement for all Leica S lenses. All lenses are optimized for the image sensor in the S2. They are devoid of imaging errors, manufactured from the highest quality glass and metals, and adjusted by hand. Digital correction of optical errors is unnecessary and the image sensor can translate the optical performance into the perfect picture without compromising image quality.
Leica goes on to say that:
All S lenses stand out in attaining their maximum optical performance at full aperture...
That latter claim is disproven by Leica’s own MTF charts for the 35mm and 70mm lenses, and of course real world pictures should quickly establish its veracity. But all indications suggest that the S lenses are very special optics.
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