Does anybody know what the image circle is of the Zeiss S-Planar 120 mm f/5.6 macro? I understand it is a single coated (not T*) lens issued both as a large format lens (barrel/Copal 0) as well as for Hasselblad. The latter would suggest limited LF application (maybe 6x9, but possibly not 4x5).
Given that it was also used for MF, I guess it is most likely optimized for around 1:5-1:2, with decent performance at 1:1, maybe 2:1. So image circle at 1:5 - 1:2 would be most meaningful.
Anybody has any opinion on performance for colorwork in 4x5?