I’ve long said that the Zeiss ZM 35mm f/1.4 Distagon is the best lens available for Leica M cameras, and I stand by that, so I thought I had better show its pedigree in spite of the degrading effects of ill-suited sensor cover glass.
Can a lens impaired by sensor cover glass still produce satisfying images? This page shows examples at various apertures in night shooting. The Zeiss ZM 35mm f/1.4 Distagon is such a gorgeous performer that even though it is technically impaired at wider apertures, its core rendering style is still rewarding.
In diglloyd Leica M:
The Zeiss ZM 35mm f/1.4 was mounted on the Panasonic S1R using the Novoflex Leica M Lens to Leica SL/T Camera Body Lens Adapter.