Ive used teh K&F X Nano with 28 layers and now the one with 36 I think and I say its the BEST filter out there and the price is unbeatable! The more expensive filters are simply NOT better AT ALL!!! The K&F is truly an AMAZING Product and ive used it when nobody was talking about these!
A word of warning if planning to use the K&F filter with long lenses. I purchased the 82mm K&F Concept ND8-2000 for my Canon R6mkII and 100-500mm lens only to discover it produced double images. I contacted K&F and received this reply: “We confirmed with our engineer, the filter you ordered is our D-Series ND8-2000, it doesn't have a high-definition variable nd filter so that it might cause blur in the telephoto lens, considering the focal length you have used, we kindly suggest our Nano-X series ND2-400 filter, it's a high definition filter, can avoid blur, thanks.”
@@dcyo I can say that my even my Tiffen VND does not appreciably affect the image sharpness with a 300mm/APS-C configuration so I can't agree with your statement about VND and telephoto lenses in general. However, I can also say that the same image with the K&F D-Series ND8-2000 is entirely unusable - it is heavily blurred even on the viewfinder.
Gran review de estos filtros... Justo estaba por tomar una determinación y no sabia en realidad si K&F era una marca confiable. En Amazon hay comentarios buenos y malos en cuanto al Viñeteo y el color que producen, pero después de ver varios videos y en especial el tuyo creo que ya estoy decidido y compraré un K&F ND Variable Slim Blue coating 77mm para mis lentes Canon en mi EOS R Muchas gracias y saludos desde la Ciudad de México
You‘ll surely like the filter, have fun with it! One subscriber wrote me that the filter is not good for very long lenses (bigger than 150mm focal length). But for all others it should be fine.
Hallo I have 2 K&F Filters and now I am looking for the nisi true color it seems to be the perfect filter . When I do my upgrade to the Sony A7 SIII. Danke sehr schones video
Thank you for the detailed analysis, including data and calculations. So many lazy reviewers just get sent a free thing from the manufacturer, and only take a quick glance, add useless fluff and padding to their video and call it a review. Your analysis shows that you care about the details and real world results! Subscribed. :)
I noticed that my copy of this K&F filter reduces sharpness on my Fuji 16-55mm f2.8 zoom lens. This is only noticeable when I'm zoomed in to 55mm, as that magnifies the filter, but it affects auto-focus performance.
Hi Ronald, thanks for the test and funny commercial :) So do you think all those bad Amazon reviews with visible vignetting and X pattern are because people simply use it wrong and turn it too far behind the optimal range? Almost every K&F variable filter has many high star ratings on Amazon, but in the written reviews section people complain about those X patterns, etc. I can´t believe K&F would produce and sell so many variable NDs with such strong vignetting and X pattern ruining image even in the dotted range. Thanks!
Hi Ondrej, the X-pattern definitely only occurs when you turn it too far. In the normal range you don't have any problem. I've tested several nd filters up to now and never had an issue with that. Greetings, Ronald
Thank you. I bought this 3-11 k& as a brand new photographer and I’ve been pulling my hair out with all the reviews of blurry images and x patterns. I haven’t had a chance to use mine yet. The clock is ticking to return.
K & F is a professional brand, if anything K & F has been around a lot longer than these "professional" brands. The only difference really is that the cheaper lenses in the K & F filter may be made out of plastic not glass, and therefore smudge easier than more expensive glass filters.
Hey Ronald! Excellent video, comparison and commercial! Quick question. What about sharpness difference / loss compared to no filter. Did you see any difference? Particularly for photography (I use a A7RIII) I'd be highly interested to know. Thank you!
Hi Stefan, I‘ve noticed no problems with sharpness loss with any pf these filters. Of course I can only tell from a video perspective where I don’t scale images up like crazy (like some photographers might do when they crop their images a lot due to their higher resolution). But even when I zoom in about 100% it looks just the same as without filter.
I am considering k&f for my drone instead of PolarPro. I had PolarPro before and it was good just that they offered a less variety for the new drones. PolarPro cost premium
Hi Ronald! I am thinking to buy k&f nd8-2000 filter for my sigma 16mm 1.4 and my camera is Sony zve10. My 1st question is - At what stop does this filter shows "X" sign? 2nd question - Is it good to use it with my 16mm sigma 1.4 if I am planning to use it in afternoon and evening too? Your reply would really be appreciated. Thanks!
Inside of the marked range on the filter-ring, there is not X-sign at all. Outside, it can happen when you really far outside of the valid range. And yes, the filter should be fine for a 16mm 1.4, it's only problematic with long lenses (like an 85 or 100 mm)
I've got exactly this K&F filter (before watching this video), and my item is unusable. It gives a noticeable darker area in the center even at minimal settings (3 stops), and clearly moves color to yellow, but it can be fixed, darker areas - no
Very strange, I would return it. Must be a production problem. I’m not sponsored in any way by k&f so my review wasn’t faked. My filter is fine, I still use it. So really contact their support or send back the filter.
The stops for each filter can be easily calculated. 1 stop = ND2 2 stops = ND4 3 stops = ND8 4 stops = ND16 So nd 400 would mean about 8 and a half stops.
I just bought it couple days a go. I have two 8-2000 and 2-400. When i use in tele lens like 85 or 70-200, when the object is far (infinity focus) it become crossblur, the object seems not focus either in video and photo. Have you ever try them in tele lens ? Thank you !
Yes I‘ve heard from others in the comments of this video that they have the same problem with long lenses. On my 24-70 I didn’t notice any issue and I don’t have a longer lens.
@@RonaldKasper just message their office in indonesia. Lets see what the say about this. Just little concideration for the others who want to buy this knf for tele lens 🙂 thank you !
Hey man thanks for the vid very informative! I just wanted to ask.. what series of k&f concept filter do you recommend? I’ve found b series, k and x online. I have a mirrorless canon r50 (beginner) and my size is 49mm? Thanks dude
K&F gives very little information about what their series names actually mean. At least I haven’t found a good explanation. The k series is meant to be the „base level“ one although I can’t see any optical difference to the results of the x series. They all use high quality japanese glass and if you’re on a budget, I would take the k series.
Hey Ronald, Im Not Educated At All On Filters… However, All My Video Content I Record Outdoords… I’m Looking For A Good VIR- ND Filter And A Polarized Lens Filter … I’m Working With A Sony A6600 My Lenses Are: Sony E16-55mm 2.8 And Sony E15mm F1.4.. Thank You…
PolarPro builds nice filters that are a combination of ND filters and polarizers. You can dial in both independently, maybe one of these would be a good idea for you.
@@RonaldKasper sehr gute Qualität und Story. Bzgl. englischer Sprachraum habe ich erst gedacht, warum mach "er" das alles nicht auf Deutsch. Der Markt dafür ist ja sicher auch hier?
What about wide angles? Even they mention this on their product page on Amazon: ''This variable ND filter is not recommended for use with wide angle and telephoto lenses.'' What is meant here by wide angle? Until 50mm or 35mm? Quoting wikipedia here: ''...a lens of focal length 35 mm or less is considered wide-angle.'' But what do K&F consider a lens wide angle? I will wait on buying this product until I see a comparison footage with different focal lengths.
Hi, I have a the exact nd filter here but when I used it on my Tamron 70-180 F2.8, at over 100mm of focal length at wide open F2.8 the image is a total mess and has double imaging footage for both images and videos. If I remove the filter everything is tact sharp again. This problem only occur when im shooting or filming under sunlight environment, when im in a room its all good. Some no one uses ND filters on telephoto lenses or is this a common scenario that could happen? The only way I can get a slightly sharper image is if I step down to a smaller aperture. Can anyone please help me? 🙏🏻
@@RonaldKasper I even tried it on my K&F ND2-400, still the same result. I have no idea whats happening, maybe at or above that focal length, maybe there is something happening with the refraction of light from the 2 polarising glass on the ND filter? Hmm
Even I have read so many similar reviews, so I am extremely confused if I should get variable ND for my Nikkor 24-200 F4-6.3. Appreciate response from all the experienced folks :)
Geile Werbung, schade das man bei RU-vid und so nur kak Werbung gestrahlt wird. Einiges ist ja auch sehr stark verschwult, die z.B. die Garnier Werbung. Also weiter so, schönes Video
Danke, meine Werbung wurde z.B. auch auf RU-vid geschaltet, sogar mit recht gutem Erfolg. Also auf gehts, Kamera schnappen und die nächste lässige Werbung drehen! 😉
