Using a variable ND Filter on the 16-55

verheyph · Mar 12, 2019

Hello,

I'm testing long exposure with my 16-55 on a XT3 This is what I get when rotating the filter (quite pricey) at is maximum (-8). It seems to be a kind of "irregular reverse vignetting). Could anyone understand what's going on ?

Thanks

--
Cheers - Philippe

Advent1sam · Mar 12, 2019

verheyph said:
Hello,

I'm testing long exposure with my 16-55 on a XT3 This is what I get when rotating the filter (quite pricey) at is maximum (-8). It seems to be a kind of "reverse vignetting). Could anyone understand what's going on ?

Thanks

Normal, google it!

Bobo Hodls · Mar 12, 2019

That's typical for v.ND's when tuned towards the extreme end of density.

Justin Cider · Mar 12, 2019

Use of a variable ND should really only be used for video or when you only need to cut down a stop or two of light. Long exposure should utilize a regular ND filter. Depending on how long you're going, somewhere between 3-8 stops. A variable ND filter is essentially just two polarized filters together so when you use them anywhere past half their tolerance you start to get that X. I should note that there are some new variable ND's that have figured out how to lessen or eliminate this but they are several hundred dollars.

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Using a variable ND Filter on the 16-55

verheyph

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