The K&F Concept 67mm MC UV Lens Protection Filter is well made and feels like very good quality. Looks fantastic on my Sony lens and works well making photos look good.

It's great as a UV and does everything it needs to, but I'm just not sure if it's worth for the amount paid over Tiffen's. Doesn't seem any different to me.

Great price, I got it for the lens protector. The thickness is also good.

It's great as a UV and does everything it needs to, but I'm just not sure it's worth it for the amount paid over Tiffen's. Doesn't seem any different to me.

review the K&F Concept K-Series 67MM MCUV Pro UV Filter Slim MC UV Protection Filter Ultraviolet Filter, which was kindly provided to me free of charge by Amazon Vine for testing. My opinion is unaffected by this fact, my review reflects my experience with the product. I will get this filter again for money Why? Because it fits my fleet and I have finally found affordable, high-quality protection for my favorite glasses. I have to place the thread very flatly so that it doesn't get caught (no hectic moves; it can be unscrewed calmly but in a relaxed manner). I work with fast lenses and don't see any serious changes when stopping down. There is still one advantage - the sky is a bit bluer in the picture

Over the past year or so, I’ve tried maybe a half dozen K&F filters uniformly finding them to be among the best I’ve ever experienced. This high density ND 1000 has met my expectations of excellence that this brand has now established with me.

There’s little to say other than it’s thinner than other filters of any sort meaning it has less of a chance of creating unwanted refractions once mounted. Like all filters, it must be used alone. If added to an existing UV or clear filter many used as a lens protector, the two can and likely will work to degrade image quality. This refraction issue is a good reason not to mount the UV or clear filters as a lens protector. A lens shade works almost as well as a protector but won’t interfere with a filter.

In use, this ND 1000 does filter to 10 stops (eyeball estimate) without affecting the color or introducing other unwanted effects. Like so many things photographic, the good stuff costs but also performs.

This UV filter was a great addition to my Tamron 35mm for my Sony. This filter is definitely more of a protector than a modifier, at least in my use case, it helps protect the lens's exposed focusing mechanism and keeps dust or particles out of the lens. Overall I would say this is a great filter for any lens as it creates a barrier between the front element and the world and I have not experienced any negative effects on image quality from having this filter on the lens.

I have both a tiffen vari ND and this one. And I like this one even better! My tiff filter makes a slight bluish tint and this one, even turned too far, does not.
I also like that it has a hard stop and therefore no x patterns. Quite the opposite of meeting.
In addition, the k&f filter can filter out almost 1 1/2 stops more light than the tiffen, without a vignette.
If I hadn't already bought the Tiffen I wouldn't have it in my camera bag anymore. So he lies around and is no longer used.