Is this a fungus spot on the rear element of this EF 24-70 2.8

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hanhasgotqi
hanhasgotqi New Member • Posts: 9
Is this a fungus spot on the rear element of this EF 24-70 2.8

Greetings to all,

I recently noticed two spots on the inside of the rear element of my 24-70 2.8L. I thought they were dust particles. However, one of them had a halo sort of thing around it. I have never had fungus in any of my lenses before, so I was wondering if anybody could tell if this is the beginning of a fungus growth. If not, what do y'all think it is? Can dusts cause such a thing on the coating?

Thanks in advance!

That's the halo thing I was talking about.

The rear element was pristine when I acquired the lens second hand 2 years ago.

This 24-70 2.8L has been used on a Canon 70D

Canon EF 24-70mm f/2.8L USM Canon EOS 70D
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