Hello,
I recently acquired this old JH Dallmayer 220mm brass lens in an auction with multiple antique cameras and accessories. I’m very happy with this purchase and intend to use it with an old wooden large format camera, but as of now it’s in a way too poor condition to make any decent photos with. Luckily, it seems as if it’s only “dirt” and not haze, fungus or any other unwanted lens disease.
My only problem is i can’t figure out how to remove the glass or the “iris” so i can access it and clean it thoroughly. Any ideas on how to remove the glass, or easily access it?
Also, I’ve been wondering if it’s even a complete lens. There’s no front glass, but I’m not sure if there’s supposed to be? And will it even be functional as is?
Last, does anyone know what causes the black spots on the brass, and if it’s possible to polish away? I’m worried it might just make it worse.
Hope someone can help me get a bit wiser about my new lens!
Thank you,
Miles
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