raydm6
Yay! Cameras! 🙈🙉🙊┌( ಠ_ಠ)┘ [◉"]
The short baseline of the Barnack required the 1.5X magnification for accurate focusing. (The II is compromised by it's 1X rangefinder.)
Canon came up with the variable magnification viewfinder, so that one window could accurately focus at the highest magnification, but frame a 50mm lens at the lowest magnification. They also protected it with patents, so Leica couldn't go down that route...
(The need for a new round of patent protection was one of Leica's motivations for the M3...)
Bolded: I never knew this. Was that actually one of the reasons for producing the M3?