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I've been experiencing this issue on my Fujifilm x100, every artificial light has a strange blue / rainbow glare. It is the first time I notice something like this and I'm pretty sure it doesn't happen with my other camera (X-T4).

I know the x100 is a pretty old one, but is there a way to fix this issue?

enter image description here

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  • \$\begingroup\$ Does it change when the ND filter is moved in and out? \$\endgroup\$
    – BobT
    Feb 25 at 18:29

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It looks like the lens is greasy. Probably some condensation on the lens.

If it is condensation, it could be on the interior of the lens. See if there is a lot of humidity, or if your camera has moved from cold to hot or vice versa.

One way to fix condensation is to leave the camera in a warm dry place for a couple of hours. Do not leave it under direct sunlight.

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  • \$\begingroup\$ I might add it may even be hard to notice because not a lot of dirt is required to have this when lights are so bright. \$\endgroup\$ Feb 24 at 16:50
  • \$\begingroup\$ Often people will attempt to clean fingerprints off a lens' surface with a dry cloth. "Cleaning" the exterior of the lens with a dry microfiber cloth won't help. All one does is spread the oily substance evenly over the surface of the lens. One needs to use a few drops of lens cleaning fluid on a clean section of the cloth to clean the surface, then use a clean dry section of the cloth to dry it. \$\endgroup\$
    – Michael C
    Feb 28 at 20:12

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