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项目7AB：目前，我们的Type 2设计适用于Nikkor-N 5cm F1.1，并正在等待专利批准。我们现在正在考虑这个出色的设计是否也可以应用于58mm和60mm的Leica镜头。
Very few lenses were made with 58mm diameter filter size - Project 7A
Noctilux-M 50mm F1 (I) (1975-1978) - 58mm
Summarex 8.5cm F1.5 LTM (1942-1954) -58mm
Nikkor 8.5cm F1.5 LTM (1952) - 58mm
60mm Lens Hood fit on the following high speed lenses - Project 7B
Noctilux-M 50mm F0.95 ASPH (2008 to present) - 60mm
Noctilux-M 50mm F1 (II) (1978-1982) - 60mm
Noctilux-M 50mm F1 (III) (1982-1992) - 60mm
Noctilux-M 50mm F1 (IV) (1993-2008) - 60mm
Summilux-M 75mm F1.4 (1980-2007) - 60mm
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