Like every other variable ND filter, there is some color cast when nearing the maximum reduction. I wanted to share with you all how the HolyManta VND behaves up to it's 13 stop maxium limit.
To the left is the scene shot with a regular "dumb" adapter without any filters at all. To the right is HolyManta VND shot with various ND strengths.
Sony NEX FS100, Picture profiles: off
White balance: 3700 K
Canon EF 50mm f'/1.4: Aperture at f/1.8
Sorry for the long intro.