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The Leica Summilux-R 50mm f/1.4 (factory code 11344, 1998) is a rare ROM-equipped variant produced in limited numbers for the R9/R8 system. Its optical design is a modified Double Gauss type comprising 8 elements in 6 groups, incorporating high-index glass and floating elements for improved close-range correction. The E60 filter thread and integrated ROM contacts enable full EXIF data transfer. This final evolution of the Summilux-R 50mm retains the classic high-speed character while delivering enhanced flare resistance and edge sharpness.