have been a fan of K&F Filters and many of their other photography products for some time and have come to appreciate the brand's consistency and quality. Most of my lenses live their lives with a K&F Concept UV protection filter on the front. I have sufficiently tested the transmittance and sharpness of K&F filters in the past that I now consider them a trusted brand. I am confident in their quality. And that's the point, right? Find a supplier you can trust to deliver exceptional quality. I use polarizing filters extensively, much more often than not. They are a multi-purpose filter that allows the user to add contrast and saturation, reduce glare and reflections, and to some extent, since they add neutral density, control exposure. There is little reason not to use them, except in low light situations. Another benefit of the 82mm size, and most sizes for that matter, is its cost advantage. The use of step-up rings allows it to accommodate a range of lenses that require a smaller filter size. This applies to filters of any size. In practice, the K&F Concept 82mm polarizing filter can be used on lenses with filter sizes from 77mm upwards, provided appropriate adjustment rings are used. You do not need to buy a separate polarizer for each of your lenses. The filter is solidly constructed from aircraft-grade aluminum and is typical of the high quality of K&F Concept filters in general. The damping of the outer ring is even and provides the necessary resistance to keep the adjustment securely in place. Since a CPL has no stop, when adjusting it it must be rotated in the same direction that you would attach it to avoid accidentally detaching the actual filter from the lens. K&F Concept uses AGC glass, formerly Asahi Glass Company, a Japanese company that is the largest glass manufacturer in the world. They also claim that there are 24 multi-layer anti-reflective coatings on each side of the glass, which are important for reducing internal lens reflections. In my testing, the filter lived up to the seller's claims. It polarizes light and the colors seemed "true," or at least to the extent inherent in the rendering capabilities of a digital sensor. This was affected by camera settings and the sharpening and dynamic range features introduced by the manufacturer. In other words, "True Colors" is subjective. Also, I did not notice any reduction in sharpness when using the filter. The physical properties of the filter are its relatively light weight, as well as the faceted chinas around the perimeter of the polarizing ring, which provide a better grip. I use an 82mm VND filter, which is 82mm in diameter, and the thread on the front of the filter, also 82mm, provides enough depth for the stacked filter to be securely attached. The K&F front lens cap that comes with the filter is on par in quality with any OEM lens cap I own. The clamping levers are easy to use, firmly spring loaded, and give a firm grip to the filter or the lens it is attached to. I also appreciate that the front threads on the CPL match those of the 82mm filter size, allowing the use of standard OEM accessories such as a lens protector. The filter comes with the lens cap, an adjustable lanyard, a high-quality microfiber lens cleaning cloth, and a plastic storage case. K&F Concept offers good value for money and doesn't cut corners.