From our friends at Camera West, here's an interesting read and video about the f/1.0 Noctilux.
The Leica 50mm f/1 Noctilux-M - Is this the Most Legendary Leica Lens?
https://www.leicastoresf.com/blog/thumb-prints-signatures-the-leica-50mm-f1-noctilux-m?utm_medium=email&_hsmi=221236051&_hsenc=p2ANqtz-_GOLt_QsXgfL8N3mp04orsT7qNArSqSwAPqhRk9-Qto7S7o9eS1T9ImIrWdFaCPeLfYp7T4c_ZhCWcuwv9fiDNvVvmAw&utm_content=221238214&utm_source=hs_email