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Hello! Is there someone who has experience with this kind of "spot-on-the-lens" stuff? :)

I bought a used 35 mm camera and discovered a "spot" on the lens inside. Of course, it doesn't help to clean the lens. Haven't tested shooting with it yet. Just wondering, is it something with the coating, or is it fungus? Will it affect the image?

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  • \$\begingroup\$ This doesn't really change the answer(s) much, but out of curiosity, is this a fixed-lens 35mm, or is it a camera with interchangeable lenses? \$\endgroup\$
    – scottbb ♦
    Commented Oct 31, 2021 at 16:48

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Looks like fungus to me. You can try to clean it off but it may well have affected the coating and/or etched the glass.

It looks like it's in the dead center of the rear element so it may affect contrast and/or image sharpness, perhaps more noticeably at small apertures.

Run a roll through it and take shots at various apertures and lighting situations. That's really the only way to tell whether the camera/lens will be acceptable to you.

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  • \$\begingroup\$ Thank you so much for the answer! \$\endgroup\$
    – user102406
    Commented Oct 29, 2021 at 16:09
  • \$\begingroup\$ What are the odds that said fungus is going to contaminate other lenses used in the same camera? \$\endgroup\$
    – xenoid
    Commented Oct 29, 2021 at 20:08
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    \$\begingroup\$ @xenoid I was wondering if the camera is a SLR, or a fixed-lens 35mm. \$\endgroup\$
    – scottbb ♦
    Commented Oct 29, 2021 at 22:09
  • \$\begingroup\$ Ah, yes. Fixed lens. Forgot about those :) \$\endgroup\$
    – xenoid
    Commented Oct 29, 2021 at 22:16
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    \$\begingroup\$ My first impression is that this looks like a fixed lens compact 35mm film camera, \$\endgroup\$
    – Michael C
    Commented Oct 30, 2021 at 7:25

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