Originally posted by kevinWE I'm hoping somebody has had a go with these filters and could perhaps post some results or just give a general opinion.
I have a K&F polarizer, which has given me positive results, they are Chinese products but high-end comparable to other brands much more acclaimed,
you know that everyone believes they have the magic sphere, but the reality is to try them and then of any brand you talk about there can always be a sample or defective or not perfect.
Anyway, I've read enough to know that they are good and can produce, in a very small quantity of the tiny dominating ones, insignificant and correctable in post-production.
Of course you know that, but it's good to remember that the graduated ND filters are basically two polarizers phase-shifted by 90°,
that's why by rotating them you get different values depending on the use you want to make of them.
Adding a polarizer is not a good idea, for the reason I explained and because too many elements in front of the lens can create unwanted effects, but anything is possible.
Test K&F Concept ND 1 Test K&F Concept ND2
Ciao Mario