I use this lens and his fantastic viewfinder to photograph landscape and sometimes portraits in their environment too. I can compare it with Zeiss lenses for Hasselblad, but with 35mm film: all metal, softness of the rings and above all quality of the transparencies.

Got this (but not on Amazon) for use with my M6 and M2 Leica's in conjunction with the Leica 21,24 and 28mm external viewfinder. (A viewfinder is a must.) This lens is in the same class as the Mamiya 6 50mm and the Zeiss/Hasselblad super-wides.