MANDATORY protect the lens devices (camera or photo): too many risks to their qualities without it. I chose this one, thanks to RELEVANT comments made by previous buyers (I thank) the details of these comments have answered my questions while supplier description is insufficient on certain points. Yes, the filter fits perfectly with the objective of the LUMIX FZ200; yes, it is screwed without problems; no it does not prevent to implement the cache sun or the lens cap. YES, I seem neutral PERFECTLY: after testing, even expanding (on the computer) some pictures on the computer (this is not scientific rigor but seems enough), I see no difference WITH and WITHOUT filter. Of course, with amazon, delivery, packaging: Nothing to say: so you get used to this quality we forget to talk about!