Why Copal #00, #0, #1, #3? A quantitative answer.

[Tin Can]

Shutter History from this Forum

https://www.largeformatphotography.i...y-and-use.html

[Len Middleton]

But there were lenses made for the #2. The infamous Xenotar 150/2,8, the Angulon 165/6.8, the Symmar 240/5.6 and a few more. But there are different versions of the #2 shutters with different threads. I'm no expert and it's rather confusing.

And the 355/9 Repro-Claron