Yes, the 'x' pattern is caused by the VND combination of filters (which inn the case of the Nisi are two linear polarizers) and the angle of incident light. But there is a solution to that: you can unscrew the Nisi VND a little and rotate it until de 'x' pattern disappears; then you screw it again. The advantage of the Freewell K2 VND is that you can rotate both linear polarizers independently (you don't need to unscrew the VND). With the rotation of one linear polarizer filter you control de amount of light you get through (ND function). With the other linear polarizer you control the eventual polarization that the first movement could introduce. Since in the case of the Nisi you only have one rotation control, you must unscrew it a little to be able to rotate it to get the polarization effect needed to eliminate de unwanted 'x' pattern. Hope this is useful.
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Yes, the 'x' pattern is caused by the VND combination of filters (which inn the case of the Nisi are two linear polarizers) and the angle of incident light. But there is a solution to that: you can unscrew the Nisi VND a little and rotate it until de 'x' pattern disappears; then you screw it again.
The advantage of the Freewell K2 VND is that you can rotate both linear polarizers independently (you don't need to unscrew the VND). With the rotation of one linear polarizer filter you control de amount of light you get through (ND function). With the other linear polarizer you control the eventual polarization that the first movement could introduce. Since in the case of the Nisi you only have one rotation control, you must unscrew it a little to be able to rotate it to get the polarization effect needed to eliminate de unwanted 'x' pattern. Hope this is useful.
@@phrasalsyntax I’ve never had an issue on it before this. I’ve been using it for two years.
Thank you though! Ill have a look