Although cheap to start.

This filter assembly will begin the long exposure on a good basis, metal rings are good, both doors filters (1 and 3 slots) are not too bad but remains in low-end plastic. It takes a little forced to be able to return them in filters.

Beware of vignetting at 10mm cannon stm 10-18 with 3 slots filter holder, I can say for the other objectives having only one there.

As to the quality of filters, this is not what it does best. We arrive at a fairly large color difference when placing more than one. Infrared is not absorbed giving a magenta trend very difficult correctable in post processing especially if you degraded and neutral neutral stack. Moreover they easily dirty plan of microfiber fabric to avoid scratching them.

The cover provided which provides storage filters is handy, however, do not discard the blister filters to store in it they will avoid spoilage.

In short this is a good basis to start but it will evolve in terms of filters for something of quality. However these unreal colors may appeal to some.