Not to be forgotten or neglected, the 30mm f3.5 Zodiak for Pentacon 6x6.. fisheye.
These are a LOT better optically than most would believe or know. Having converted more than one to Hasselblad "F" body then comparing the results to the official Zeiss-Hasselblad 30mm Distagon fisheye which are near identical at every aperture.
https://www.pentaconsix.com/30mmpt1.htm
The other great winner "East Block" lens would be the 180mm f2.8 Sonnar, last version multi-coated (MC in red font) was simply excellent and better than any Zeiss-Hasselblad offering.
These can still be had for not a lot of $ and usable on a view camera with Sinar shutter and Pentacon 6 adapter mounted to a Sinar lens board.
Bernice
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