nhodgkinson
TPF Noob!
I am collecting some Zeiss Contax primes for video work. I am trying to get the best quality examples I can find as I will then spend time and money, in some cases more than the value of the lens, in having them de-clicked and cin-moded.
I have had a lot of bad luck on e bay with 2 "Mint" lenses arriving with fungus but the 50mm f1.7 that arrived this morning seems to be good in every way except when I shone a light through it to check for fungus I saw that one of the convex internal elements had looked what looked like the mist coursed by condensation, like when you breath on glass.
At first I thought it was condensation or cleaning marks but both front and back are perfect and when I looked closely it's clearly on a surface inside the lens somewhere.Dose anyone know what this is? Is it condensation? Will it go away or is it something that I don't know about, like the beginning of some kind of fungus?
As it is it will I'm sure soften the image a little.
I did some test shots and the lens seems to be fine, it did not soften the images as far as I can tell. F1.7 is soft but I don't think that's down to the mist. I looked through some other 50mm lenses and could't find any others with this round patch of fog inside.
I have had a lot of bad luck on e bay with 2 "Mint" lenses arriving with fungus but the 50mm f1.7 that arrived this morning seems to be good in every way except when I shone a light through it to check for fungus I saw that one of the convex internal elements had looked what looked like the mist coursed by condensation, like when you breath on glass.
At first I thought it was condensation or cleaning marks but both front and back are perfect and when I looked closely it's clearly on a surface inside the lens somewhere.Dose anyone know what this is? Is it condensation? Will it go away or is it something that I don't know about, like the beginning of some kind of fungus?
As it is it will I'm sure soften the image a little.
I did some test shots and the lens seems to be fine, it did not soften the images as far as I can tell. F1.7 is soft but I don't think that's down to the mist. I looked through some other 50mm lenses and could't find any others with this round patch of fog inside.
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