I broke the rear flange of my Porst lens. Where can I find parts for this lens or is there another lens I could take parts off to fix mine. Any advice or comments are appreciated. Thanks.

These lenses, you can buy for about 50-100€ at ebay. I guess, your lens is a actual total loss. Better, you buy another and take or sell yours for parts.

OK, it‘s the 1.2, so it‘s more than 100€… nonetheless, best tip is to buy a broken on at ebay to get parts.

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Welcome,

Maybe a picture would help. I am not sure, which part of your lens is damaged. Maybe you can change that part which one from a Porst/Cosinon 1.4/ 1.7....