The resolving abilities of those Zeiss lenses are in another class altogether. Shots were handheld in harsh, early-morning light. After they were developed, I examined the slides with a Peak 7x Anastigmat loupe. In photographs of a gravel road, small pieces of gravel are clearly resolved. When photographing an orange laying in the snow and covered with frost, the flakes of frost are clearly defined.
Photos are softer in the corners at all focal lengths.
However, that could easily have been due to camera shake. At 24 to 28 mm, distortion is apparent mainly at the edges, where horizontal and vertical lines pull towards the corner. The distortion changes to regular pincushion distortion by 35 mm and gets progressively worse at the longer focal lengths. In fact, shots I made of a doorway show fairly severe picushion distortion by 50 mm and what I would describe as extreme picushion distortion in the 85 to 120 mm range. By 85 mm, doorways in the center of the frame looked like reflections from a funhouse mirror.