K&F CONCEPT 52mm Variable ND Filter ND2-400 1-9 Stops with Cleaning Cloth

I have been taking photographs since the mid 1970s and over the years have gone through my fair share of filters, square, round and even homemade. This K&F filter comes well packaged in a sturdy plastic box which a foam insert designed to securely hold the filter whilst being transported. The insert has recessed finger holes for very easy removal of the filter even with cold fingers. On picking up the filter the first thing you notice is how sturdy it is and how velvety smooth the movement when you twist the outer ring. I have purchased lower-priced filters before and sometimes been very disappointed in the mechanical construction but not this time as it is on a par with many more expensive filters in my collection. I purchased this to use on my Nikon lenses when shooting video. My normal choice of filter is the square system but at present for video use these screw-in ND faders are by far the best option for my money. One of the first acid tests for any filter is how well it attaches to the front of the lens and this one did not disappoint. Straight on, first time with no fuss or fumble. The filter rim sits proud on a Nikkor 24-70 f2.8 making the outer ring very easy to grip when adjusting the strength of the ND filter. This is a relatively slimline filter and as with other slimline filters I have used the lens cap does not feel very secure attached to the front but this is not an issue with this type of lens as I only have it attached whilst I’m actually using the camera. Whilst I have not had the chance yet to try the filter in all conditions my early conclusions are very positive. Physically using the filter is very pleasant because of the smoothness of operation and there are handy markings around the rim of the filter showing maximum and minimum positions. On a dull day like today, shooting with a Neutral picture style I found the images taken with the filter lacked just a little contrast compared to those with no filter. I doubt that it would be as noticeable on a bright, sunny day (when to be fair an ND fader is more likely to be needed) but in the event it was not a major issue as I simply tweaked the contrast up a notch or two and created a custom picture style which worked a treat. As soon as we do get a bright, sunny day I will test the filters again and if my assumption regarding contrast proves wrong I will post an update below. However, with a 1,500 mile wide storm due to batter the Uk over the weekend don’t hold your breath! I have other K&F products in my kit bag, including lens adapters, and would not hesitate to purchase this brand in the future. On my personal experience to date they are well constructed and represent very good value for money. This filter represents incredible value for money and the small niggle with reduced contrast in dull conditions does not give me a reason to reduce the star rating. Had I paid around the £100 mark for the filter then all other things being equal I would certainly be dropping one star but at this price point that is just being curmudgeonly. Please note that whilst I have reviewed the 77mm version here I have also purchased a 67mm version too for use with a Samyang 12mm lens on a Fuji X-T10.

Another great high-quality ND FILTER from K&F concept. This is my third filter and I’ve had no issues with it. Fits great. And there are no notable problems with focus. Great for the price.

Seems to work well, with good clarity. Also, have thankfully not experienced the X some reviews seem to have come across, though that may be dependent on different sized filters, mine is a 49mm filter thread size for an EF 50mm. Although the product functions well, and I’m happy with the price, the downsides include my current lens cover working so I either have to purchase a new one or take the lens off every time between use, and also the lack of a lock on the ND filter which means you can keep twisting it without any mechanical feel to knowing what the minimum/maximum ND amount is which then also means more fiddling - this would have been a nice touch but I understand that might be a more premium feature. Overall, you’re getting what you pay for, it’s a low price and it functions well - you lose out on some features you’d get from more premium filters.

Very good quality lens, highly recommended. Super easy to adjust the amount of light being transmitted.

Able to photo graph the partial eclipse with it

Really good quality item. Only drawback is standard sigma lens shade does not fit over but can be worked around

For the price this is good for an emergency filter, but be wary of five star reviews claiming this is high end kit. It isn't. A really good filter would cost you five times as much, and it's easy to see where K&F cut corners. For videoing purposes this will serve my requirements, and I'm not too bothered about colour shift as I shoot in 10bit log and can correct it. The good news is that there is no noticeable X mark, which variables can suffer from. The bad news is that I can no longer attach my lens cap or hood to this thing. This defeats the whole object of a variable, which is there for speed and efficiency. Now I am obliged to remove the filter every time I want to put the lens cap back on, while my hood sits in my camera bag, collecting dust, with the filter restricting me on what shots I can capture. This was purchased specifically for the Panasonic 100-300, a zoom that needs a lens hood. The fact that K&F omitted to include an internal thread means I can't even look to buy a different lens hood to fit. No hood is going to fit this thing. Like I said, for £25, this does the job, but I'm kicking myself for not doing further research before purchasing. I should have just bought a couple of fixed ND filters that allow me to attach my hood. The fact I can't even fit my lens cap is extremely annoying.

Kit - Nikon D850 / Nikon 28-300. The packaging was great, the box was great, it was in a plastic container in a box in packaging. Great security around it. I tested it out late sunset (that's when I received it) and I can say that the image quality does seem to fade slightly, baring in mind, I am shooting with 45 megapixels. The adjustment on the filter is stiff and smooth, which is a great feeling when adjusting between filter strengths. As you can see in the images, the lighter ones are without the filter and the darker ones are with the filter. So far so good, but I did find 1 issue that is more annoying than anything and I believe it should be fixed and replaced by the company, you cannot put your lens cap on it. The lens cap is too small for it, which is a bit bizzare considering it's supposed to be a 77mm and no word of it being wider on the outside. P.S. it fits the lens perfectly. So that's the only let down to the filter. On a bright sunny day you could keep that filter on and not worry too much about not getting enough light considering it is adjustable. In the video, you can see the filter changing as I turn the ring to darken it, then after that first clip, you can see me putting the lens cap on with the slightest click, but not enough to hold it on. It would fall off with a slight nudge to it. I will be taking it out again and testing it on waterfalls, I will try and update my review on my experience with images.

Buone prestazioni per un prezzo entry level. Consigliato, da avere con sé se si vogliono fare riprese video in manuale ed anche per effetti fotografici.

I ordered the 52mm filter because the 30mm f1.4 sigma lens for sony e-mount cameras has a 52mm thread but after lens arrived, I couldn't fit it on. But after-service support was pretty helpful in telling me this

初めて使うのには良い商品かも。 場所に合わせて調整出来るのも良いですね。 もっと早く買っとけば良かった。調整が簡単なのが良いです。

W tej cenie super. Nie ma się do czego przyczepić. Działa dobrze. Do tego w zestawie ściereczka.

The filter will help in removing reflections of water or shiny surfaces, plus the ability to help with the exposer times for various picture effects. Screws on the end of your lens like a UV filter and has an easy to turn the metal ring to adjust the amount of neutral density from a little to a lot, so can be left on the lens as protection. the product is well made and should provide years of service.