Apo-Telyt-M 1:3.4/135mm

Since the introduction of the M8 and M8.2. Leica discourages the use of the Apo-Telyt-M 1:3.4/135mm. That is a pity. This lens delivers outstandingly good imagery and a very pleasant perspective. The low magnification of the M8 and M8.2 is cited as the reason for not being able to use the 135mm lens. This is true and tests with the Apo-Telyt on the M8 and M8.2 delivered very disappointing results, even when using the 1.25 magnifier. Now I also have the 1.4 magnifier and I put both on the camera. This is possible and then you get a magnification of 1.85. Contrast of the finder patch drops, but is still quite good. Testing the lens now on a Siemens star target delivered very good results wide open at 3.4 up to the Nyquist limit. (65 lp/mm).
There is a caveat however: the infinity setting is often not OK, but for closer distances it may work quite well.
Results may vary with any lens/camera combo, but it is certainly worth trying.