This Leica-made lens has a 1-metre minimum focusing distance and a 50 mm maximum focal length. For those who like to use a filter, this lens has a filter diameter of 49 mm.
From London Camera Exchange
Leica Noctilux-M 50mm f/1.2 ASPH.
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Leica 50mm f1.2 Noctilux-M ASPH Lens - Black
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