Zeiss ZM 85mm f/4 Tele-Tessar Aperture Series: Teak Bench (Leica M240)
The 310 gram metal and glass Zeiss ZM 85mm f/4 Tele-Tessar is a petite M-mount lens suitable for the Leica M Typ 240 or other M cameras. First class build quality, a nice little gem.
With an adapter, it makes a very compact optic for mirrorless cameras also (e.g. Sony A7/A7R), with a friendly ray angle for likely high performance on mirrorless.
A first evaluation is on the Leica M Typ 240. In Guide to Leica:
Teak Bench (Leica M240 + Zeiss ZM 85mm f/4 Tele-Tessar)
This f/4 - f/16 aperture series includes HD and UltraHD images as well as the usual crops.
See also the same scene on the Sony A7R.