This lens was Nikon's first foray into telephoto world, along with the 8.5cm f2 PC. The 13.5cm f4 is very sharp.
I own the 13,5cm f4 RF Nikkor with an RF-F conversion tube and use it on a bellows. It is insanely sharp!
There are two 13.5 cm rangefinder lenses, one is f/3.5 with a helicoid for general use, the other an f/4 with more elements and no focusing for use with bellows, this one is outstanding.
This lens was Nikon's first foray into telephoto world, along with the 8.5cm f2 PC. The 13.5cm f4 is very sharp.
I own the 13,5cm f4 RF Nikkor with an RF-F conversion tube and use it on a bellows. It is insanely sharp!
There are two 13.5 cm rangefinder lenses, one is f/3.5 with a helicoid for general use, the other an f/4 with more elements and no focusing for use with bellows, this one is outstanding.