I ordered one, and will let you know if it's crap or not! I'm fully aware of checking on the build quality etc.
Cal - doesn't stacking adapters mean you cannot get infinity focus? Or even close to that? You essentially are creating close focus rings.
Huss,
I focus infinity just fine. Understand that the SL being mirrorless has a very small distance from lens mount to sensor. The M-mount adapter increases and matches the appropriate distance for accounting for the M to mirrorless offset.
My Leica M-R adapter allows stacking on my SL to mount an increased distance of a Leica SLR lens onto the SL as if I were mounting a "R" lens on a "M" body when used inconjunction with the M-T adapter.
Also there is versatility where you could use "R" glass on say a M-240 or M-246 using the Leica M-R adapter. On these cameras I believe you even get to use "R" profiles on your M-body.
I found stacking adapters offered more freedom and flexibility. The Leica adapters also automatically figures out if I am using a M lens or R lens. The selection of profiles remains manual unless you mount a 6-bit lens, otherwise the last setting whether M or R is selected as a default. Very thoughtfully executed and eloquent. Mighty smart design.
All the adapters are doing is offering a lens mount and the proper/appropriate spacing at a basic level, but with the Leica adapters you also have an interface with the lens profiles.
Originally I bought a Novoflex Nikon F-mount to Leica "T" mount to use the Noct-Nikkor on my SL. This direct adapter offered no lens profile or selection. Basically using this adapter I was shooting without any lens profile/correction.
Because I'm stubborn, because I live in NYC, and because B&H has a no gripe return policy I was able to test, learn and experiment to fully develop my SL's capabilities. Later I bought a used M to Nikon F-mount Novoflex adapter for less money, in new condition with box, that allowed me to use M-profiles on Nikon glass. Paying the premium to have lens profiles I think is a good deal.
To me stacking adapters allows more creative freedom and further intergration as well as adaptability.
Cal