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Tell me about the old Nippon Kogaku N 24mm f/2.8.

It looks more like abrasions in the photos, but it looks dish soapy in real life, so who knows. The fog in the center of the second picture isn't fog. I stronger light it will be crazy hazy:





By the way, that is stopped down to f/16.
 
Here is the black beauty it came with. It is not AI converted:

 

Wow, it looks single-coated! I thought all 24/2.8 were multicoated from the start.