Are nd filters only for achieving motion blur?

I am very new and lost in the world of photography please don’t laugh. I came across nd filters for my phone and thought they were meant for controlling light. As in a glare. But my friend said they’re only for motion blur

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  • 4 weeks ago
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    Motion blur is one effect that you can achieve using an ND filter.

    Think of them as sunglasses for your camera. Too much light, put on the sunglasses.

    A polarized filter is what you can use to control glare, and a PL also acts as an ND in most cases. Not sure that you can use a PL on a phone though, as it can interfere with auto focus.

    neither would be useful (to me at least) for a cell phone.

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