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RF100-500 Purple Dot Dead Center

Started 3 months ago | Discussions thread
Tristimulus Veteran Member • Posts: 9,998
Re: RF100-500 Purple Dot Dead Center
2

nanciej wrote:

Thanks for all the replies. I do have a clear filter on the lens

That's most likely the cause.

Most likely internal reflections from the filter at a certain zoom range.

May be internal reflections in the lens (rare, but happens in some zoom lenses).

as I am often around flying pebbles. I just find it very odd this only occurs in a particular focal range.

Why? The optical configuration of a zoom lens vary when zooming.

And always exactly in the middle.

Typical for this kind of hot spot.

Canon is now suggesting it is lens flare? I have never experienced purple lens flare. Could be. But is lens flare that consistent with where it shows up and at what length?

Flare is common, green, blue, purple - the entire visual spectral range.

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