K&F Concept 77mm Variable ND Filter ND2-ND400 (1-9 Stops) with Putter HD 28 Multi-Layer Coatings Import AGC Glass Adjustable Neutral Density Filter for Camera Lens

After several months of use, the filter has a stain in the middle that distorts the image quality by creating color discoloration, the stain cannot be cleaned because it is created between layers that can be seen in daylight. Impossible to contact the seller.There is no warranty policy.

The stops don’t work as intended… you can’t feel the ticks and it just goes all around…. Basically doesn’t function as required…. Better spend some extra money and buy a better quality one

Modifica un poco el color pero nada que sea muy molesto a menos que seas un profesional que necesite que si o si no se modifique ni un poquito el color.

Très satisfait de ce filtre ND variable. La bague de réglage est fluide et précise, sans le redoutable effet de 'croix noire' sur la majeure partie de la plage. La qualité optique est au rendez-vous : pas de perte de piqué ni de dérive colorimétrique majeure. Idéal pour la pose longue et la vidéo en plein soleil. Je recommande sans hésiter !

ND filter works perfectly! Used it for my 16mm lens (24mm full frame equivalent) on a aps-c camera. Zero vignetting all the way down to the last stop. Only shows X when you go past the ND400. Even directly only ND400 there is zero vignetting. Perfect for my Sony ZV-E10 II. Highly recommended!

Exceptionnel produit

I've not noticed the dreaded X pattern, but I have not tested it near the darkest end where you might expect it to show, and plenty of reviews deal with the IQ well. My 77mm one will accept an 82mm screw in lens hood lens hood. Whilst I think K&F should point these sizes out better, once on, it is a great way to attach the right lens hood, IMO. I think it's a good higher-end budget option (at the offer price).