Well, a picture says a thousand words! Look at his. While his profile says he's 16 and been on the forum since 2019 - he does have a lot to learn, yet should be well aware of the search and other features of the forum being here that long.
As has been mentioned in a few previous posts - some posts seem to be just seeking attention. I'm not a genius in my old age (was not in younger days either), yet learning the features of a forum and also the drone you own thru such things like YouTube - we would hope that he has used all those, but seems to not be so. As I stated earlier in the post - a simple Google search on filters - like UV, CP, and ND would provide him a wealth of info to know what they will do for you. On many pages I belong to on social media - like waterfalls, outdoors, etc - many post the same virtual questions many times a day and week - yet won't take a few minutes to look or search the page to see the exact same question already asked a dozen or more times. They are TOO BUSY or TOO IMPORTANT for such things. When those whom have been on the pages for more than a week and look at the posts being made make comments to search, etc - people get really bent out of shape and become nasty. Sadly, that is what our culture is fast becoming - going from self sufficient to relying on everyone else to do the work for you.
Granted there are times more direct questions need to be addressed and that is fine and dandy - yet do a small amount of research on your own to find the answers first, then ask questions that you don't understand or need more info. Take hiking for instance - people ask about hikes in an area or state. Well, #1 my hiking ability is not going to be yours, so my answers may not be good for you. I provide websites like AllTrails or if they are into waterfalls - a good waterfall guide and tell them find what FITS YOU. Very few of us have the same likes, dislikes, skills, etc.
Jus' sayin'!