The original lens is a high-precision and high-resolution industrial-grade line scan lens from Schneider in Germany, known for its exceptional imaging quality, this lens has extremely low chromatic aberrations (Apochromat design) plus extremely low geometric distortion, and provide a very high image quality from edge to edge at a wide magnifications range. please refer to the original price listed in the Schneider catalog and its MTF charts (attached photo). There are only a limited number of remaining stock lenses modified available, making them very rare in the market.
The lens is a high-precision modification by Yeenon, suitable for all Leica M series cameras with rangefinder coupling and yellow spot focusing, also it can be adapted for various film and digital cameras with the appropriate adapter ring. It performs exceptionally well on Fujifilm GFX 50s 100s and Hasselblad X1D X2D 4433 (44x33 image sensor) medium format digital camera bodies, providing full coverage of the sensor.
The sample pics #12-13 was taken with this lens by Hasselblad X1D ii camera (sensor size 44x33mm), #14-15 by Sony A9II, and #16-17 by Sony A7R III camera.