ZEISS prime lens performanceThis first-class 24 mm (35 mm full frame equivalent) prime lens features a large F1.8 maximum aperture and is capable of outstanding sharpness and contrast throughout the frame plus beautiful �bokeh� in out-of-focus areas.MTF ChartLens ConfigurationRefined exterior finish and feelThe black-finished aluminum alloy exterior of this lens affords an appearance that is eminently suitable for the distinguished ZEISS name, and of course it blends beautifully with the graceful design of E-mount bodies. The engraved focus ring offers sophisticated appearance as well as superior grip and operating feel.