Challenge number 1) The K&F Concept 77 mm Variable ND filters I purchased arrived later than promised and I was not able to use it for my 9 day photoshoot. Challenge number 2) It fits on my camera lens but needs time and patience to attach to the lens but it does fit. Challenge number 3) No positive stops, no detents to let you know how far you've gone (my ND filter 1.5-10 stops). In addition, if you are invested in using your lens hood while shooting, it won't fit with these ND filters.I'll be using the ND filters on my next photoshoot and will submit an update to my review.

I used the filters on 58mm nikon camera lenses, the threading matched and the filters all worked as they should. I won't have need for the GoPro stuff, but the filters and case themselves are well worth the price asked. A nice addition to my camera equipment.

This is a good filter for the price. It does a good job and is easy to use. It is however, poorly assembled - needing constant re-tightening. Dirt or haze on the inside requires disassembly to clean. Lens should be shipped with spanner wrench for disassembly and a proper cloth for cleaning as Polarizing filters are easily damaged while cleaning.

Use this to protect my $600.00 lens. Works as billed. Made in China, but is OK. What isn't made there. I will be looking for European filters or other than Chinese.

I'm not experienced with filters at all, usually sticking to portraits, however these really work well. I stacked a 16 and an 8 to give me 7 stops, and the result really is great. No degradation on quality from what I can tell, and no vignette on a 6d with a 28mm lens. The only reason I'm knocking a star of is that the pouch which contains the filters, while useful really does stink lol I've no idea why it should but it really is unpleasant

I use them on all my lenses. Easy way to keep track of your lens cap. Adhesive is strong and should stay on your lens cap just fine.

This filter clip (Model ID: 3845) arrived in a small, Smallrig branded cardboard box. The lightweight clip, fits over compatible phones and allows you to attach a variety of different filters to your camera.(The photos are a little misleading, so it should be noted that this item is just the clip. No filters come with it.)In use the clip opens to about 13mm wide, which should allow enough room should your phone have a case or cage attached. It went over an iPhone 13 without any issues.There is padding on the inner face of the filter ring and on the face of the clamp, which offer protection to your phone as well as giving the clamp a better grip.You can attach 52mm Magnetic filters to the front of the clip, which sit over your lens or multiple lenses. It practice, being magnetic made the filters very easy to attach and remove, and it was great to be able to start experimenting with both ND and polarising filters.In conclusion, this is a neat and effective way to attach filters to the phones it is compatible with. My only negative is that I wish it also accepted standard screw thread filters. Whilst 52mm magnetic filters are available, they are currently few and far between. Not only would this feature allow for the use of the vast array of standard filters that are currently on the market, as well as a choice of many different manufacturers to pick from, but it will also help those who already have such filters in their camera kits to save a bit of money. Apart from that, this is a really nice filter clip design.~ Amazon asked me to review this product and to give my honest opinion about it. That’s what I have set out to do, so I hope you found it helpful. ~

The filters fit perfect inside these reusable k-cups. I was worried the coffee would be diluted, but it tastes just like it should. Very happy with purchase. I use this with the officepro model.