R
RML
Guest
That's exactly what I meant as well. There aren't any adapters for 21mm LTM lenses that will bring up 21mm frame lines. You can use any other adapter (for the 28mm for instance) without any problem, but you'll only get the frame lines that the adapter was designer for (28/90, 50/75 or 35/135).
I use the 28/90 adapter for my CV 25/4 lens. The 28mm frame lines cover quite nearly the 25mm FOV so I can use the viewfinder of my M2, but mostly I use the add-on viewfinder that came with the CV 25/4.
I use the 28/90 adapter for my CV 25/4 lens. The 28mm frame lines cover quite nearly the 25mm FOV so I can use the viewfinder of my M2, but mostly I use the add-on viewfinder that came with the CV 25/4.