https://leica-camera.com/en-int/photography/lenses/m/apo-summicron-m-50mm-f2-asph-black/technical-specification
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https://leica-camera.com/en-PT/photography/lenses/m/apo-summicron-m-50mm-f2-asph-black/technical-specification
Leica APO-Summicron-M 50mm f/2 ASPH. - Downloads | Leica Camera AG
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https://leica-camera.com/es-ES/fotografia/objetivos/m/summicron-m-50-mm-f2-negro/datos-tecnicos
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https://leica-camera.com/ko-KR/photography/lenses/m/apo-summicron-m-50mm-f2-asph-silver/technical-specification
Leica APO-Summicron-M 50mm f/2 ASPH. - Downloads | Leica Camera KR
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https://leica-camera.com/de-AT/fotografie/objektive/m/apo-summicron-m-1-2-50mm-asph-silbern/technische-daten
Leica APO-Summicron-M 50mm f/2 ASPH. - Downloads | Leica Camera AT
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