So yes, the filters are not truly neutral and bring a violet tint to where they are present (especially if you overlap them, which I do not recommend), but that's easily fixed a fault developing with Lightroom for example. More than enough for occasional use if you have a small budget.
Warning for large angles (30mm and less), the filter holder being included rather large, it causes a strong vignetting on a full frame sensor. I ordered a wide angle filter holder for less than 3 of the blow.
