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use of ND Variable filter

Photography Asked by Zografos Vekiaris on December 16, 2020

I am an amateur photographer and I tested a ND 2-400 variable filter-at its maximum 8 2/3 stops-for a low light landscape scenery.My Nikon d610 suggested data were aperture 4.0 ,shutter speed 0.4s,iso 100 without the filter and the exposure calculator app on my mobile gave me a time of shooting of 205 s.However photo was black and remained black even when I exceeded the time of shooting up to 5 minutes and more.
Something went wrong and I need some advice on this.

One Answer

A variable ND is essentially two linear polarizers in series. And if two linear polarizers are oriented 90* to each other they will block all light. I suspect you have over rotated the filter as Kai mentioned, or perhaps it is mis-marked.

Answered by Steven Kersting on December 16, 2020

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