Based on a classic optical design from more than 80 years ago, the Primoplan 58mm f/1.9 II from Meyer-Optik Gorlitz is a unique slightly longer-than-normal-length prime lens for Leica L-mount cameras. Working in conjunction with the unique optical design is a bright f/1.9 maximum aperture, along with a manual focus design, that benefits the use of selective focus and shallow depth of field techniques. The aperture setting, along with a 14-blade diaphragm, also greatly affects the quality of bokeh, with wide-open settings generating a distinct swirly bokeh quality, and stopped down settings producing a more detailed, yet smooth blur. In regard to the optical layout, a simple five-element, four-group construction is featured, along with the use of Schott glass to produce a high degree of clarity. An O'Hara Anti Reflex Coating is also applied to reduce surface reflections, minimize flare, and increase contrast. Additionally, the lens features an anodized aluminum housing that is durable, lightweight, and contributes to smooth, silent focusing performance.
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