I tested the K&F Concept filters on a Canon EOS 5D Mark III with a Canon lens.
I am very satisfied.

The filters are very well made. They are delivered well packaged. It is also practical that you get them right away in a well-padded bag and can thus store them well protected in the photo backpack. So the filters can also get no scratches and you always have the filters of one size together.

Also supplied is a cleaning brush.

The filters are absolutely accurate fit. This is not self-evident for filters of this price category.
I received the filters on a test basis which has no influence on my rating.

Original photos

Its perfect for my Canon EOS M6 mark II with the 22mm lens and the Canonb EOS RP with the 35mm lens ... I was amazed from the quality and the compact size ...

Am using Canon 6d mark 2 with a heavy 70-200 mm lens and it works well for me!The tripod has good build quality, is very steady even for heavy equipment , is lightweight, folds up very small, easy/fast setting up and comes with a nice carrying case. Good deal for the price!

Recently bought Canon Mark 4 which is a little bit over 3 lb (1800 grams to be exact) I was using some old Sunpak tripod which broke, so I was looking for a good replacement that can handle the height of my camera.So far I am really happy with this tripod. Looks strong, legs are sturdy. Whole construction is made from quality materials without any cheap plastic on it and is not ultra-heavy nor super light. Really compact when in folded position and has carry bag which also seems like its made from quality material. Love the design and the orange color here and there. I am using K&F Concept ND filters so overall and I'm really satisfied with the company's products. The quick release plate has a bit weird mechanism for removing which takes few extra seconds,but not a big deal in general.Great tripod for the price you pay for which I totally recommend

Got this for my "nifty fifty" Canon 50mm 1.2 L lens on my Canon 5D Mark IV, and they're pretty solid.
You get three filters: (1) ND4 (2) CPL and (3) MCUV which are all pretty useful in different scenarios.
A huge plus for the included case, soft brush, and price point.
Overall, I would recommend this for any creator doing photography BOTH indoors or outdoors, and looking to significantly reduce reflectivity!

In perfect condition. I fit great with my Canon Mark II. The focus is on the hand

use the following other lenses on my Sony A7 Mark III: 24 - 105mm 4.0 | 16 - 35mm 4.0 | 85mm 1.8 | Just so you have references for my review...I think the lenses I listed above are beyond reproach. I was skeptical about the Samyang at first. I bought the lens because I ... a) wanted a light fixed focal length that forces me to use this really "cool" 35mm;-) b) wanted a light combination c) I'm still relatively flexible with it ("Street " not necessarily only people, but in the city) possibly also portraits (not classic, just more reportage) ... the fixed focal length should of course be quite sharp (but sharpness is really not the most important thing for me when taking photos, just a side note) d) Face detection and eye autofocus would be very nice because then I can focus on composition The Samyang really has all of those things. That's a really good lens! It is of course a value for money monster! The only downside... no metal, but plastic. But I can do without it. It would be "stupid" the other way around. Metal and for that a cucumber of lens, right? Here you can really access without hesitation. It's a lot of fun, the autofocus works really surprisingly well...I wasn't really expecting it.

I bought it to mount Nikon F mount lenses on a Canon 5D Mark IV and III body and it fits perfectly with zero slack. As these are manual lenses, there is obviously no autofocus and the diaphragm is closed manually.

If they added a tab that closed and opened the diaphragm it would be 100% perfect.