The filters are indeed well protected from raindrops. The autofocus on my OM-D continues unaffected by the polarizing filter. The polarizing filter itself works well, although it's still quite difficult to turn. With both filters mounted on my 14-150mm lens, I don't experience any vignetting. The two metal caps are also great; they allow the unused polarizing filter to be carried in my pocket without being damaged.
21/06/2025
The product comes with a small cloth bag for storing the filters. The filters are protected by end caps. The product appears to be made of aluminum and is of high quality overall. The filters do what they're supposed to.
16/06/2025
have other K+F filters for other lenses and they have been exceptional. I ordered this duo for the Sigma APS-C 18-50mm F2.8 zoom which I use on my Sony A6000. If I stack both filters together I get strong black corners. If I zoom from 18mm to 19.5mm they are gone. If I use one filter at a time no problem. So I have decided to leave the polarizer on for the summer and re-install the UV in the fall. Unless I plan to shoot 20-50mm on a particular day. These filter rims are so thin I dont believe there is anything in the marketplace that could improve this situation. I have stacked K+F on other lenses with no issues. Must just be this Sigma lens design.
11/06/2025
The quality of the product is too good. The case is perfectly constructed.
08/05/2025
I am very satisfied with this filter set 82mm MCUV+CPL. Really was astonished how good premium looking package. Nice to keep in hands and see that company cares about positive emotion to grant their product buyers. Quality of filters is outstanding - precise fit for Lumix S 24-70mm f2.8 lense. Just tested for picture sharpness without/ with UV/ with CPL/ with UV+CPL. First three positions not able to see any picture degradation, but with UV+CPL very slight lost of sharpness. Worth to mention that no color cast change for UV filter. And the last positive shock - delivery was so fast, I do not expected it yet. So I do not look anymore for other companies ND,CPL, UV filters as K&F Concept satisfied my needs!
05/04/2025