I bought this filter primarily for videography, where I usually film according to the 180-degree rule. This means that to achieve a cinematic video image with a certain amount of motion blur in a single frame, you film with a shutter speed equal to 1 divided by twice the number of frames. For example, if I film at 50 fps, I need an exposure time of 1/100th of a second, which is impossible to achieve without an ND filter, especially at wide-angle in bright sunlight.

The filter is also useful in photography, albeit only to a limited extent, as certain situations often require a stronger darkening effect. If I want to create soft water in a stream in bright sunshine, I often use filters above ND1000, as well as if I want to show a busy area deserted.

But as I said, that's also very specific, and in my case, it's about videography. The filter is designed for my 100-300mm MFT lens, which I mostly use for wildlife photography. In testing, the filter showed no weaknesses. I didn't notice any color cast, and there was no X-cross effect. The promised effect of up to 5 f-stops is achieved. Excellent!

The filter comes in a synthetic leather case with a magnetic closure and a "removal aid" in the form of an integrated ribbon to prevent accidental contact with the glass when removing the filter. The case also has a magnetic closure.

The filter itself weighs 43g (weighed) and moves very smoothly with a pleasing resistance across all f-stops. The adjustment aid, of course, eliminates the need for a rigid lens hood, but it can also be removed if you have the appropriate tools.

Technically, this filter, which is the "little brother" of the Nano-X Pro, is also extremely high-quality at a third of the price. The Nano-X Pro series, however, is slightly higher quality in terms of frame and coating.

The price-performance ratio is excellent.