The first M4-P with a 28mm wireframe was introduced in 1980, while the LEICA 28mm f / 2.8 Elmarit v1 was discontinued in 1972. LEICA 28mm f / 2.8 Elmarit I will bring out 35mm wireframes on M2, M4, M6, M7, Mp, m9, and m10. You need to treat the edge of the viewfinder as a 28mm frame. When LEICA 28mm f / 2.8 Elmarit I is mounted on M3, 90mm and 50mm wireframes are displayed at the same time. So the LEICA 28mm f / 2.8 Elmarit I is a 28mm lens with a 35mm wireframe.
While using LEICA 28mm f / 2.8 Elmarit I, I am also using super angulon 21mm 3.4. The two lenses have similar optical designs, made in Germany, and Schneider style. I suspect that the LEICA 28mm f / 2.8 Elmarit v1 is made by Schneider. I really like this style, it has a sense of history.
The LEICA 28mm f / 2.8 Elmarit I is also produced in Canada. In 1969, the Leica Canada factory trial-produced a small number of second-generation 28mm elmarit lenses with optical structures, the second-generation plastic focusing handle, and the first-generation metal.
The LEICA 28mm f / 2.8 Elmarit I is compatible with many digital M cameras, including M9, m10, m240, etc., and there is no obvious color shift. It is normal to have a slight vignette. I once did a test. I chose a lens correction in the camera to solve the problem of vignetting, but I chose to turn off the lens detection. Natural vignettes are better.
The Leica elmarit 28mm 2.8 v1 is indeed a very personal lens, which is pursued by collectors and users at the same time.