Perhaps is it only the copy I received is defective ... But I intend to acquire a GND filter for a filter holder system, and this brand competed with another excellently listed. I say "entered" because my last tests make me choose security: between 100 and 125 euros, I prefer to put 25 euros more for a brand that has proven itself.
At just over 50 euros for this filter it at the time of the deemed equivalent exceeded the hundred euros, disappointment is not too painful.
Let there be no loss of sharpness is obviously not enough to advise the purchase of this filter.
