Does anyone has experience with Heliopan variable ND filters?

Started Jan 5, 2013 | Discussions thread
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M Lammerse
M Lammerse Forum Pro • Posts: 11,281
Does anyone has experience with Heliopan variable ND filters?

Dear all,

love to know from people what their experience is with the Heliopan fader or variable ND filter.  Especially the possible shifting of colors and vignetting. Im planning to buy the 77mm version but like to know the possible  color shifting, if there is any?

Thanks in advance,

Michel

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