17mm · f/1.7
The Schneider Kreuznach Xenoplan 17mm f/1.7 is a machine vision/CCTV lens adapted for mirrorless cameras. It has strong vignetting on APS-C sensors, requiring heavy cropping (BurstMox). The iris is almost square, which some find a downside for bokeh (ZoneV). Optical strengths are not highlighted; weaknesses include vignetting and non-round iris. Build is typical for cine lenses. It suits users who accept these limitations for compact wide-angle use.