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🎥 Capture every moment, control every stop — ND mastery in your hands!
The K&F CONCEPT 77mm Variable ND Filter (ND2-ND400) features premium Japanese AGC optical glass with 28 multi-layer coatings for superior image quality. Its unique putter-style frame allows precise, smooth adjustment across 1 to 9 stops, perfect for both photography and 4K video. Waterproof, scratch-resistant, and ultra-slim, it prevents vignetting on ultra-wide lenses and fits all 77mm camera lenses, making it an essential tool for professional creatives seeking flawless exposure control.











| ASIN | B08ZYDZ58V |
| Best Sellers Rank | #7 in Camera Lens Neutral Density Filters |
| Brand | K&F CONCEPT |
| Coating Description | Multi Coating |
| Compatible Devices | Cameras with 77mm lens thread size |
| Customer Reviews | 4.5 out of 5 stars 1,766 Reviews |
| Enclosure Material | Glass, Optical Glass |
| Image stabilization | False |
| Item Dimensions L x W | 3.03"L x 3.03"W |
| Item Weight | 80 Grams |
| Manufacturer | Shenzhen Zhuoer Photograph |
| Manufacturer Part Number | KF01.1465 |
| Material | Glass, Optical Glass |
| Maximum Shutter Speed | 30 seconds |
| Media Type | ProductImage |
| Model Name | K&F Concept Variable ND Filter |
| Model Number | KF01.1465 |
| Photo Filter Effect Type | Neutral Density |
| Photo Filter Factor | 400 x |
| Photo Filter Size | 77 Millimeters |
| Photo Filter Thread Size | 77 Millimeters |
| Screen Size | 62.2 Millimeters |
| Special Effect | Neutral Density |
| Thread Size | 77 Millimeters |
| Video Capture Resolution | 1080p or 4K |
| Water Resistance Level | Waterproof |
C**N
Great quality product
Pretty good the only thing is, I would love to have clicks instead of it free spinning, but it gives you more room to play with it. Overall, the quality is excellent.
A**S
Great Quality
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!
M**Y
Excellent, Resonably Priced, Filters
K&F filters are fantastic, work as promised with zero distortion. Made with Japanese optical glass. Reasonably priced filters that are excellent!
B**N
Excelente calidad
Me emociona tener este filtro en mi manos, el empaque y estuche es muy premium.
A**2
High-Quality Filter + Excellent Customer Service—Just watch out for Amazon "Fulfillment" Swaps
Update: K&F reached out to me directly after my initial review. They are now fully aware of the "bait and switch" issue where cheaper items are being returned in premium boxes. They’ve been incredibly attentive and assure me they are taking internal steps to help prevent this from affecting future customers. While the error lies with Amazon’s fulfillment process and not the manufacturer, K&F’s support has been top-notch. If you run into any issues, don't hesitate to Contact K&F Support directly—they genuinely care about their customers. The Filter: Once you have the authentic product, it’s solid. I’ve seen almost no color cast so far, the "putter" adjustment is smooth, and the build quality feels premium. I’m currently using it with an iPhone and haven't noticed any issues, though I haven't tested it for vignetting on a full-frame camera setup yet. Bottom Line: Be aware that "bait and switch" returns happen often with expensive photography gear on Amazon. Always double-check your item as soon as it arrives!
S**A
Excelente
Excelente compra, si haces video debes tenerlo para poder manejar el triángulo de la exposición correctamente en momentos soleados
H**N
Am disappointed in this filter
UPDATED REVIEW - Although I was disappointed in this filter, I have to say that the customer service is absolutely incredible in wanting to make things right by either refunding or giving me the option to choose another product. Anna from Customer service responded very quickly to my issue. Thank you for standing by your products! I really like the putter - it's so much easier to manipulate the filter. I am disappointed in the color cast and dark X type thing at certain times - not sure why this happens...
V**L
not very usable
I had to stop down to f/4.0 at 1/60 since I was pushing the lens to heavy X-pattern and vignetting. The quality of my photos at moderate strength had the same photo ruining artifacts too. It's strange because i used the 77mm vnd+cpl before and never had issues quite like this one, i don't recommend this for photos and videos. I'm only putting 3 stars because the quality and packaging is phenomenal but the glass makes it useless.
U**1
Poor quality
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.
J**O
Modifica un poco el color
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.
L**C
Produit parfait
Exceptionnel produit
D**A
Filtro ND2-400 K&F Concept da 77mm
K&F Concept è sinonimo di qualità. Avevo già in corredo altri loro filtri, seppur abbastanza vecchiotti e con diversi anni di servizio alle spalle. In virtù di un mio imminente viaggio fotografico, ho deciso di optare per qualcosa di nuovo, affidandomi sempre a loro. Vi indico nel dettaglio quali sono, a mio parere, i pro e i contro di questo nuovo loro prodotto. Innanzi tutto il packaging è davvero ottimo: la scatola è in cartone assai robusto, impossibile anche da piegare, piacevolissima poi l'apertura magnetica. Il filtro è conservato in una custodia in similpelle con chiusura magnetica e non in plastica, il che dà al prodotto una rifinitura che possiamo definire "premium". All'interno, avvolto in un sacchetto protettivo, il filtro. Si tratta di un pezzo abbastanza pesante, già al tatto restituisce un'ottima impressione. Il corpo è in alluminio, i vetri sono di ottima finitura. Molto sottili (e questo è un bene perchè così si riducono le eventuali perdite di nitidezza), impermeabili ed antigraffio. Piacevolissimo (e utilissimo!) il cosino arancione che serve per poter variare l'intensità del filtro stesso: l'unico neo è il non avere una corsa limitata durante la rotazione, ma non è un grosso problema, dal momento che i limiti ND2 ed ND400 sono indicati proprio sull'estremità del filtro stesso. Ad ogni modo, il filtro è stato costruito in maniera tale che, anche sforando i limiti, la fastidiosa ombra ad "X" non si presenti. Per il momento ho avuto modo di provarlo solo in città in una giornata un po' uggiosa, nei prossimi giorni spero di integrare questa mia recensione con altri scatti in montagna. A chi è indirizzato il filtro? Sicuramente a chi ama la fotografia di paesaggio o per chi ha il desiderio di fare lunghe esposizioni in città (restando nei limiti dei 9 stop): certo, il prodotto non è il più economico sul mercato, ma basta provarlo per un po' per capire che vale ogni centesimo speso. Non sono un professionista della fotografia, ma per il mio uso va più che bene.
T**E
Ja super!
Ja super! Ik kan nu video's opnemen met de Sony A7IV en de Sony 200-600 mm op een zomerse dag in de zon. Door te draaien aan het filter wordt het beeld op de camera direct lichter of donkerder. De hoes vind ik wel te groot, past niet in je spijkerbroekzak op je kont, dus moet mee in jaszak of een tas. Heb nu een cd blik gevonden waar deze met wat bubbelfolie perfect in past en zo mee kan in mijn broekzak.
Trustpilot
2 weeks ago
2 weeks ago