so let me start off with this, i dont usually write review about lens filter because most of them are just good and ive never had problem with any of them since my canon 60D era.lol but recently ive got a little issue with one of my main filters that i only used a few times so far since its only being used on one of my main lenses to shoot weddings and enggagements only. one morning when i took it out of my camera case then attached it to my A7siii to get them ready for a shoot, after some inspection, i found micro scratches right in the middle of the filter! i was shocked and little bit annoyed, because it never been dropped, rubbed against anything! so i emailed the company an hour later and got a response later on that day. after emailing back and forth including sending them pictures, the very next day they said they will send me a replacement and would be here on monday! it was so easy to work with them although im glad i had spare filters incase of emergency situation like this happens. it might have been one in a million deffect from their factory but it surely didnt scare me enough to stop buying their products in general!

ps: the scratches seemed doesnt affect or degraded the picture quality at all, but i wouldnt use it for professional shoots anymore.