The filter holder is easy to use and apply. Having the kit supply every step-up ring adapter is a huge plus and allows you to easily carry it everywhere you go.The ND filter did an amazing job, pairing up with one of my graduated filter, and provided an amazing sunset picture over here in LA.Definitely a good grab, especially if you are looking to get into filters without having to spend $175+ for 1 filter before holder.

this is my first set of square filters and it's a different experience than using round filters but it's really cool and the photos you get when you combine this with landscape photography is awesome. the adapter fit nice on my Canon t6i too.

A few years 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.One of the most appealing features of this product is its price. At $73, it’s much more budget-friendly than purchasing a single ND1000 filter. This is a great set-up for beginners and professionals alike.

I got this for the filter holder and adapters. They work great!Mad the filter that came with it is pretty decent.

beautiful well-designed filter holder with 2 slots for filters
made from machined metal and is very light and easy to use.
the ND 1000(10 stop) is made from high-quality german glass has no colour casting and doesn't vignette making it perfect for those long exposure days.
All in all a great starter filter kits and great value for money highly recommended.

I have really fallen in love with the K & F Square filter system. It allows one to utilize those long exposure settings and in turn renders beautiful composition results. Here I am kind of being picky but once the filter holder is attached to adapter ring, it just seems to be loose but that all it is...just the nature of the beast. It will not fall off; it as secure as secure can be. Overall the system is great and works as described with no light leaks. It definitely provides you with the best bang for your buck. This system has generated a fresh, and new enthusiasm in my love for photography. Absolutely loving the effect of those long exposures now and results it produces. I highly recommend this product and believe one should be in every photographers camera bag.

Nice finish with a excellent thumb lock. All metal parts that are machined to fit perfectly. Very nice product with first class glass. Made in England.

I very like the glass quality of the ND filter with no color flair, and good metall adapter, however filter doesn’t stay tight against the lens.
It's best value for the money.

Had a problem at first. The filter holder, closest slot to the lens, had a large space allowing a lot of light in and of course making the filter application useless. I contacted K&F and they were aware of the problem and asked patience as they were working on a solution. No problem. Within two weeks they sent me their updated filter holder and it now has a soft material that prevents any light entering. Perfect. The filter is a true 8 stop and glass not plastic. Great service, they stand behind their products, great filter, great price. What are you waiting for?

Overall this seems like a good product so far. There is a noticeable blue color cast which shifts the white balance around 800 Kelvin toward blue. This color cast should be easily corrected in post while shooting digital. The density of the filter seems to be right at (or close enough to) 10 stops. Sharpness doesn’t seem to be an issue with a 1:1 crop showing no difference to the eye. The filter does seem a bit thin, however, I’m used to cinema filters which can be up to 4mm thick so I’m sure it isn’t an issue. the holder attaches easily and seems secure. Due to reading some reports of the filter holder coming off after it is attached I have made it a point to pull on the filter holder slightly to make sure it is attached securely. The adapter rings seem well made and the filter pouch seems alright but not as good as the Lee versions. Overall for $70 I think this is a hard deal to beat.