A28.5mm Carl Zeiss 1m Proxar (closeup) for Contaflex
item #285mmproxarpushonforcontaflex. This is a push-on closeup lens for Contaflex (Carl Zeiss #909, A 28.5 f=1m). Condition 10-/10. This pushes on to the 50mm using the thin slot on the front of the lens.
