From the golden outer packaging comes a microfiber cloth wrapped in foil and the actual filter box. Inside is a filter that is oversized and heavy for the screw-in size. I have the filter in screw-in size 82mm and am testing it on the Leica Vario-Elmarit-SL 2.8/24-70 with the Leica SL2s.

The mount has a grooved grip ring for screwing in, which protrudes about 1 cm over the filter mount. This makes it easy to grip and screw in or out. There is no fiddling when changing the filter and no dealing with filter clamps when the filter is stuck! The manufacturing quality of the mount is excellent. The entire front frame of the filter has to be twisted to adjust the strength of the polarization. The screw-in knurled ring must be held in place because the rotation of the polarizing filter is difficult. The difficulty is not a design or manufacturing defect, but is for the 2nd function of the Filter is required, namely the darkening from factor 2 to 32, which is adjusted in the front part of the filter holder with 2 relatively large and easy-to-grip levers. If the polarizing filter adjustment were smoother, it would rotate with the ND adjustment.

The overhang of the filter holder makes a larger filter glass possible than with conventional screw-in filters, so that the thick filter does not vignette even at a 24mm focal length. The filter glass is visibly multi-layer coated; a water-repellent nano coating is applied to the front. The original lens cap can be snapped into the filter! All of this gives the impression of a very careful and well-considered design.

Polarizing and ND filters work as usual. There is no particular susceptibility to reflections and stray light. I cannot detect any impairment of the sharpness or an explicit color cast of the lenses. Of course, using the polarizing filter outdoors causes intentional color changes by filtering out the sky reflections, which means that, for example, green plants have a lower blue and a higher yellow component.

One basic problem with using the polarizing filter with mirrorless system cameras remains: except for reflections aimed at at an angle, the strength of the filter effect is practically undetectable on the OLED viewfinders. Landscape photographers who prefer polarizing filters are therefore recommended to use a DSLR with a mirror, in whose natural viewfinder image even small rotations of the polarizing filter are clearly visible. But this is not a fault of this filter, but rather affects polarizing filters in general.

Conclusion: A very carefully and practically constructed double filter at a very attractive price in comparison!

bought the 46mm to use with the Leica Summilux 35 Asph Fle. In contrast to other filters, this one is slightly larger on the outside, so the lens hood no longer fits. I thought it would be good to know if anyone uses it with this lens. Other than that, it's a great filter!

This adapter opens the lens of my Leica camera with a Canon lens

Compared to the Leica 2000b

Leica M ring

I ordered the filter to go with my Leica Q2, on which it fits perfectly, of course.

The filter has a very high quality finish and does justice to the Q2.

ND1000 I find already very nice for great effects such as an almost empty city hall market at noon.

From me there are 5 stars.

The Leica lenses fit perfectly on my xt20 the ring is very soft on both sides.. here is the one I received.

I have several Leica M lenses and I was looking for an adapter ring, but the original Fuji has always seemed to me excessively expensive even if it has some functions in itself such as aperture recognition. But the price difference is truly incredible. Well built and durable ring and now I use a 90mm Leica M on the X-PRO1 without any problem. Obviously forget the automatisms, but with a little attention you will not have any problems.