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Dust, separation or fungi?

Started Oct 28, 2015 | Questions thread
Leigh A. Wax Senior Member • Posts: 1,625
Re: Dust, separation or fungi?

If it's dust, or other foreign matter dry particles, & not tightly adheared, it should move about / change pattern if the lens is "quickly" zoomed in & out.

If the lens will "Push-pull" by gripping the front & "pumping" it a few times, you can look for a pattern change???

Leigh

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