was always of the opinion that a cheap filter set was sufficient. After this filter, my opinion completely changed. The quality of the filter is excellent. I really didn't think that was possible, totally flashed by this filter... Quality and workmanship is excellent. The controller is made of metal and here alone you can tell how good the workmanship is. You also have to keep in mind that photo quality is affected by filters. This is not the case with the K&F filter! The highlight is that I don't need umpteen different replacement filters, but can always adapt them directly to the respective situation. Personally, I still miss the stronger gradations of up to 10 apertures. However, I am really so enthusiastic about this filter that I will see if this filter is still available in 6-10 f-stops. I would definitely buy one, even if I've worked with cheap filters around 50 EUR so far. Quality has its price and in this case it is true! But for the price you really get something here. By the way, the filter fits well on the lens and I'm not afraid of losing it. It's very easy to use. The gray filter comes in a nice bag and is therefore very well protected.