The Leica 135mm f/4 Tele-Elmar Black M manual focus lens is one of those all-around perfect lenses. It is a compact telephoto with a reasonably fast maximum aperture with extremely high optical performance and built to the classic Leica manual focus lens standards. A good choice for general photography of all kinds.
When use on the M2,M4,M4-2,M5,MP,M6 and M7 it converts the 90mm frame to the correct frame for the 135mm.
Lens head is detachable for use will the Leica Visoflex system.
This lens is also compatible with Voigtlander Bessa T or Konica Hexar RF cameras.