Good quality of the filter.

Apart from the fact that it is an excellent product, the customer support is simply absolute class I have rarely been treated so reliably and friendly very high praise.

An accessory with variable applications, the case is best

The K&F Pro System from is an excellent product and much cheaper than other manufacturers yet giving equally quality results. Made from quality glass resin, I haven't noticed any colour caste in my images when using these filters. A nice touch is that each filter comes in it's own protective, soft pouch. Highly recommended.

These filters are an absolute highlight, convincingly good quality, everything fits perfectly, everything packed in high quality and protected for transport in beautiful cases.

Everything as described. A great system.

I am very satisfied with the optical quality of this filter. Especially in comparison (e.g. with Cokin) stell

The quality is convincing. No blurring or color changes. There is a case to go with it. Price performance convinces me completely. Clear purchase recommendation.

I haven’t had to use it at this point since I use a slow ISO film to begin with. Will use it in the future though I am sure.

A few month ago, I started beefing up my camera equipment. I had a Canon 5D Mark IV camera body, but didn’t have great glass. So, I started my gear journey by upgrading my lenses. I now have four amazing lenses including a 70-200, 24-70, 100mm Macro, and a Wide Angle lens. After I finalized my collection of lenses, I started looking at accessories I needed to accompany those lenses and came up with a short list of items that included high-quality filters. The problem I had was that I needed to be able have filters that works with all my lenses. Buying filters for each one of your lenses can get really cost prohibitive. So, one solution I found was to get a square filter with step-down rings. K&F Concept has a great option for this type of set-up so I gave it a try.

About a month ago, I shot photos at a wedding on a mountaintop in Tennessee. It was in the middle of the afternoon and the sun was super bright at the location of the ceremony. The venue was huge and I wanted to pack my camera bag somewhat light so that I didn’t have to struggle with tons of equipment. The square filter set from K&F concept was perfect for this type of work. The kit is lightweight and it makes it possible to use the one filter for several different sizes of lenses. During this wedding I was working with an 82mm lens and a 77mm lens as my primary glass. At the ceremony site, I had to quickly swap lenses and reapply the filter in order to get the shots the couple wanted. I found gaps in the ceremony where I could quietly and quickly change lenses and attach the filters without disturbing the event. It worked perfectly and even though some people might consider it cumbersome, I thought it was a lot easier than having to swap lenses and then screw filter into each lens.

When using these filters, I shot exclusively in RAW, but did not perceive any color cast from the filters. The mount is solid and the filter is well-protected by the soft lining in the case. It’s very easy to attach the mount to the lenses and in my opinion is actually easier to work with than individual filters.

I do feel like the lens adapter could fit a little more snuggly onto the camera lens, but I’m definitely not complaining about that and it is certainly not a dealbreaker. It’s just a tweak that could make the product even better than it already is.