- Quality: ok, plastic doors filter rather rigid, well packed filters.
- Use: I have not been able to accurately assess the impact color, but it can be corrected if necessary on software. For the rest, it "does the job" without problems.
- Vignette: The kit contains 2 filter doors. The one with possibility of up to 3 filters, the other with only one filter.
> The filter holder "filter 1" enables shooting and + 17mm focal no vignetting
> The filter holder "3 filters" enables shooting from 22mm without vignetting. Below 22 mm, the edges of the filter holder appear. So if you want to photograph in full-frame 22mm below 2 with associated filters (ND 1 + 1 GND for example), it is necessary to move towards a wide angle filter holder (100mm) with the related filters .