The first tests are conclusive!
I have in the past acquired filter of lower quality and I was disappointed.
I was afraid to have the same result by not paying 100-150 a leading brand filter.
Actually no, in this case I am satisfied.
Well no, I'm really happy!
I recommend.
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Here is a small return on my use after 15 days.
I started taking photos during a stay in the mountains.
It's really good quality.
I see no loss of color on my raw files and the brightness is constant over the entire picture.
The filter is very thin and can be coupled with another filter without vignetting big problem, it's very lightweight and easily correctable in post-production.
I'm so glad I'm buying the ND1000 from the same supplier.
The only downside is that it is not variable and that it is necessary to remove the focus.
It is the same for all fixed Filterregulators ND and given the quality of the result, it is soon forgotten.
A maximum of pleasure !!!